feat(Assets): update asset services and background workers

FinlyticAssets/Database/AssetsDbContext.cs

@@ -22,6 +22,7 @@ public class AssetsDbContext : DbContext
         modelBuilder.Entity<AssetEntity>(entity =>
         {
             entity.HasKey(e => new {e.Isin, e.InstrumentCategory});
+            entity.HasIndex(e => e.LastUpdatedAt);
 
             entity.HasDiscriminator<string>("AssetType")
                 .HasValue<StockEntity>("Stock")

FinlyticAssets/Dockerfile

@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/dotnet/runtime:10.0 AS base
+FROM mcr.microsoft.com/dotnet/runtime:10.0 AS base
 USER $APP_UID
 WORKDIR /app
 

FinlyticAssets/Entities/Settings.cs

@@ -22,27 +22,7 @@ public class Settings
     /// </summary>
     public bool FinishedInitialScan { get; set; }
 
-    /// <summary>
-    /// Gets or sets the minimum number of days to wait before an asset becomes eligible for re-validation.
-    /// Combined with <see cref="MaxRandomUpdateDay"/> to achieve a flat 2-to-3-month rotation cycle.
-    /// </summary>
-    public int MinRandomUpdateDay { get; set; } = 60;
 
-    /// <summary>
-    /// Gets or sets the maximum number of days to wait before an asset must be re-validated (roughly 3 months).
-    /// </summary>
-    public int MaxRandomUpdateDay { get; set; } = 90;
-
-    /// <summary>
-    /// Gets or sets the earliest hour (0-23) of the day when background synchronization is allowed to execute.
-    /// Prevents unusual nocturnal API traffic.
-    /// </summary>
-    public int UpdateDayTimeStart { get; set; } = 8;
-    
-    /// <summary>
-    /// Gets or sets the latest hour (0-23) of the day when background synchronization is allowed to execute.
-    /// </summary>
-    public int UpdateDayTimeStop { get; set; } = 21;
 
     /// <summary>
     /// Gets or sets the maximum number of assets requested per single API pagination call.
@@ -58,9 +38,9 @@ public class Settings
 
     /// <summary>
     /// Gets or sets the idle delay in seconds between switching asset categories during the initial setup scan.
-    /// Faster than standard mode but kept high enough to prevent early rate limiting. (Default 3600s = 1 hour).
+    /// Set to 0 to move immediately to the next type after finishing the current one. (Default 0s).
     /// </summary>
-    public int InitAssetUpdateTypeDelay { get; set; } = 3600;
+    public int InitAssetUpdateTypeDelay { get; set; } = 0;
 
     /// <summary>
     /// Gets or sets the baseline delay in seconds between sequential page requests of the same asset type during the initial setup scan.

FinlyticAssets/FinlyticAssets.csproj

@@ -34,4 +34,8 @@
     <ItemGroup>
       <ProjectReference Include="..\FinlyticCore\FinlyticCore.csproj" />
     </ItemGroup>
+
+    <ItemGroup>
+      <_ContentIncludedByDefault Remove="assets\index\index.json" />
+    </ItemGroup>
 </Project>

FinlyticAssets/Migrations/20260628184437_Init.Designer.cs

@@ -1,285 +0,0 @@
-// <auto-generated />
-using System;
-using FinlyticAssets.Database;
-using Microsoft.EntityFrameworkCore;
-using Microsoft.EntityFrameworkCore.Infrastructure;
-using Microsoft.EntityFrameworkCore.Migrations;
-using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
-using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
-
-#nullable disable
-
-namespace FinlyticAssets.Migrations
-{
-    [DbContext(typeof(AssetsDbContext))]
-    [Migration("20260628184437_Init")]
-    partial class Init
-    {
-        /// <inheritdoc />
-        protected override void BuildTargetModel(ModelBuilder modelBuilder)
-        {
-#pragma warning disable 612, 618
-            modelBuilder
-                .HasAnnotation("ProductVersion", "10.0.9")
-                .HasAnnotation("Relational:MaxIdentifierLength", 63);
-
-            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
-
-            modelBuilder.Entity("AssetEntityTagEntity", b =>
-                {
-                    b.Property<string>("AssetsIsin")
-                        .HasColumnType("text");
-
-                    b.Property<string>("TagsId")
-                        .HasColumnType("text");
-
-                    b.HasKey("AssetsIsin", "TagsId");
-
-                    b.HasIndex("TagsId");
-
-                    b.ToTable("AssetEntityTagEntity");
-                });
-
-            modelBuilder.Entity("FinlyticAssets.Entities.Settings", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("uuid");
-
-                    b.Property<int>("AssetUpdateTypeDelay")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("BatchAssetUpdateDelay")
-                        .HasColumnType("integer");
-
-                    b.Property<bool>("FinishedInitialScan")
-                        .HasColumnType("boolean");
-
-                    b.Property<int>("InitAssetUpdateTypeDelay")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("InitBatchAssetUpdateDelay")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("MaxRandomUpdateDay")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("MinRandomUpdateDay")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("TradeRepublicMaxRequestPageSize")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("UpdateDayTimeStart")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("UpdateDayTimeStop")
-                        .HasColumnType("integer");
-
-                    b.HasKey("Id");
-
-                    b.ToTable("Settings");
-                });
-
-            modelBuilder.Entity("FinlyticCore.Entities.Assets.AssetEntity", b =>
-                {
-                    b.Property<string>("Isin")
-                        .HasColumnType("text");
-
-                    b.Property<string>("AssetType")
-                        .IsRequired()
-                        .HasMaxLength(13)
-                        .HasColumnType("character varying(13)");
-
-                    b.Property<bool>("HasCfd")
-                        .HasColumnType("boolean");
-
-                    b.Property<string>("ImageId")
-                        .HasColumnType("text");
-
-                    b.Property<string>("InstrumentCategory")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<DateTime>("LastUpdatedAt")
-                        .HasColumnType("timestamp with time zone");
-
-                    b.Property<string>("Name")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("Type")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<DateTime>("UpdateAt")
-                        .HasColumnType("timestamp with time zone");
-
-                    b.HasKey("Isin");
-
-                    b.ToTable("TradeRepublicAssets");
-
-                    b.HasDiscriminator<string>("AssetType").HasValue("AssetEntity");
-
-                    b.UseTphMappingStrategy();
-                });
-
-            modelBuilder.Entity("FinlyticCore.Entities.Assets.TagEntity", b =>
-                {
-                    b.Property<string>("Id")
-                        .HasColumnType("text");
-
-                    b.Property<string>("Name")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("Type")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.HasKey("Id");
-
-                    b.ToTable("TradeRepublicTags");
-                });
-
-            modelBuilder.Entity("FinlyticCore.Entities.Assets.BondEntity", b =>
-                {
-                    b.HasBaseType("FinlyticCore.Entities.Assets.AssetEntity");
-
-                    b.Property<string>("BondIssuerName")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("SearchSubtitle")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.HasDiscriminator().HasValue("Bond");
-                });
-
-            modelBuilder.Entity("FinlyticCore.Entities.Assets.CryptoEntity", b =>
-                {
-                    b.HasBaseType("FinlyticCore.Entities.Assets.AssetEntity");
-
-                    b.Property<string>("SearchSubtitle")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("Subtitle")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.ToTable("TradeRepublicAssets", t =>
-                        {
-                            t.Property("SearchSubtitle")
-                                .HasColumnName("CryptoEntity_SearchSubtitle");
-                        });
-
-                    b.HasDiscriminator().HasValue("Crypto");
-                });
-
-            modelBuilder.Entity("FinlyticCore.Entities.Assets.DerivativeEntity", b =>
-                {
-                    b.HasBaseType("FinlyticCore.Entities.Assets.AssetEntity");
-
-                    b.Property<string>("DerivativeProductCategories")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("UnderlyingIsin")
-                        .HasColumnType("text");
-
-                    b.HasDiscriminator().HasValue("Derivative");
-                });
-
-            modelBuilder.Entity("FinlyticCore.Entities.Assets.EtfEntity", b =>
-                {
-                    b.HasBaseType("FinlyticCore.Entities.Assets.AssetEntity");
-
-                    b.Property<string>("DerivativeProductCategories")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("EtfDescription")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("MappedEtfIndexName")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("SearchSubtitle")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("Subtitle")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.ToTable("TradeRepublicAssets", t =>
-                        {
-                            t.Property("DerivativeProductCategories")
-                                .HasColumnName("EtfEntity_DerivativeProductCategories");
-
-                            t.Property("SearchSubtitle")
-                                .HasColumnName("EtfEntity_SearchSubtitle");
-
-                            t.Property("Subtitle")
-                                .HasColumnName("EtfEntity_Subtitle");
-                        });
-
-                    b.HasDiscriminator().HasValue("Etf");
-                });
-
-            modelBuilder.Entity("FinlyticCore.Entities.Assets.StockEntity", b =>
-                {
-                    b.HasBaseType("FinlyticCore.Entities.Assets.AssetEntity");
-
-                    b.Property<string>("DerivativeProductCategories")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.ToTable("TradeRepublicAssets", t =>
-                        {
-                            t.Property("DerivativeProductCategories")
-                                .HasColumnName("StockEntity_DerivativeProductCategories");
-                        });
-
-                    b.HasDiscriminator().HasValue("Stock");
-                });
-
-            modelBuilder.Entity("FinlyticCore.Entities.Assets.SyntheticEntity", b =>
-                {
-                    b.HasBaseType("FinlyticCore.Entities.Assets.AssetEntity");
-
-                    b.Property<string>("DerivativeProductCategories")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.ToTable("TradeRepublicAssets", t =>
-                        {
-                            t.Property("DerivativeProductCategories")
-                                .HasColumnName("SyntheticEntity_DerivativeProductCategories");
-                        });
-
-                    b.HasDiscriminator().HasValue("Synthetic");
-                });
-
-            modelBuilder.Entity("AssetEntityTagEntity", b =>
-                {
-                    b.HasOne("FinlyticCore.Entities.Assets.AssetEntity", null)
-                        .WithMany()
-                        .HasForeignKey("AssetsIsin")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
-
-                    b.HasOne("FinlyticCore.Entities.Assets.TagEntity", null)
-                        .WithMany()
-                        .HasForeignKey("TagsId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
-                });
-#pragma warning restore 612, 618
-        }
-    }
-}

FinlyticAssets/Migrations/20260628195842_AddedScannerState.Designer.cs

@@ -1,293 +0,0 @@
-// <auto-generated />
-using System;
-using FinlyticAssets.Database;
-using Microsoft.EntityFrameworkCore;
-using Microsoft.EntityFrameworkCore.Infrastructure;
-using Microsoft.EntityFrameworkCore.Migrations;
-using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
-using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
-
-#nullable disable
-
-namespace FinlyticAssets.Migrations
-{
-    [DbContext(typeof(AssetsDbContext))]
-    [Migration("20260628195842_AddedScannerState")]
-    partial class AddedScannerState
-    {
-        /// <inheritdoc />
-        protected override void BuildTargetModel(ModelBuilder modelBuilder)
-        {
-#pragma warning disable 612, 618
-            modelBuilder
-                .HasAnnotation("ProductVersion", "10.0.9")
-                .HasAnnotation("Relational:MaxIdentifierLength", 63);
-
-            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
-
-            modelBuilder.Entity("AssetEntityTagEntity", b =>
-                {
-                    b.Property<string>("AssetsIsin")
-                        .HasColumnType("text");
-
-                    b.Property<string>("TagsId")
-                        .HasColumnType("text");
-
-                    b.HasKey("AssetsIsin", "TagsId");
-
-                    b.HasIndex("TagsId");
-
-                    b.ToTable("AssetEntityTagEntity");
-                });
-
-            modelBuilder.Entity("FinlyticAssets.Entities.Settings", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("uuid");
-
-                    b.Property<int>("AssetUpdateTypeDelay")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("BatchAssetUpdateDelay")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("CurrentScanningPage")
-                        .HasColumnType("integer");
-
-                    b.Property<string>("CurrentScanningType")
-                        .IsRequired()
-                        .HasMaxLength(50)
-                        .HasColumnType("character varying(50)");
-
-                    b.Property<bool>("FinishedInitialScan")
-                        .HasColumnType("boolean");
-
-                    b.Property<int>("InitAssetUpdateTypeDelay")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("InitBatchAssetUpdateDelay")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("MaxRandomUpdateDay")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("MinRandomUpdateDay")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("TradeRepublicMaxRequestPageSize")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("UpdateDayTimeStart")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("UpdateDayTimeStop")
-                        .HasColumnType("integer");
-
-                    b.HasKey("Id");
-
-                    b.ToTable("Settings");
-                });
-
-            modelBuilder.Entity("FinlyticCore.Entities.Assets.AssetEntity", b =>
-                {
-                    b.Property<string>("Isin")
-                        .HasColumnType("text");
-
-                    b.Property<string>("AssetType")
-                        .IsRequired()
-                        .HasMaxLength(13)
-                        .HasColumnType("character varying(13)");
-
-                    b.Property<bool>("HasCfd")
-                        .HasColumnType("boolean");
-
-                    b.Property<string>("ImageId")
-                        .HasColumnType("text");
-
-                    b.Property<string>("InstrumentCategory")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<DateTime>("LastUpdatedAt")
-                        .HasColumnType("timestamp with time zone");
-
-                    b.Property<string>("Name")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("Type")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<DateTime>("UpdateAt")
-                        .HasColumnType("timestamp with time zone");
-
-                    b.HasKey("Isin");
-
-                    b.ToTable("TradeRepublicAssets");
-
-                    b.HasDiscriminator<string>("AssetType").HasValue("AssetEntity");
-
-                    b.UseTphMappingStrategy();
-                });
-
-            modelBuilder.Entity("FinlyticCore.Entities.Assets.TagEntity", b =>
-                {
-                    b.Property<string>("Id")
-                        .HasColumnType("text");
-
-                    b.Property<string>("Name")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("Type")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.HasKey("Id");
-
-                    b.ToTable("TradeRepublicTags");
-                });
-
-            modelBuilder.Entity("FinlyticCore.Entities.Assets.BondEntity", b =>
-                {
-                    b.HasBaseType("FinlyticCore.Entities.Assets.AssetEntity");
-
-                    b.Property<string>("BondIssuerName")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("SearchSubtitle")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.HasDiscriminator().HasValue("Bond");
-                });
-
-            modelBuilder.Entity("FinlyticCore.Entities.Assets.CryptoEntity", b =>
-                {
-                    b.HasBaseType("FinlyticCore.Entities.Assets.AssetEntity");
-
-                    b.Property<string>("SearchSubtitle")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("Subtitle")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.ToTable("TradeRepublicAssets", t =>
-                        {
-                            t.Property("SearchSubtitle")
-                                .HasColumnName("CryptoEntity_SearchSubtitle");
-                        });
-
-                    b.HasDiscriminator().HasValue("Crypto");
-                });
-
-            modelBuilder.Entity("FinlyticCore.Entities.Assets.DerivativeEntity", b =>
-                {
-                    b.HasBaseType("FinlyticCore.Entities.Assets.AssetEntity");
-
-                    b.Property<string>("DerivativeProductCategories")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("UnderlyingIsin")
-                        .HasColumnType("text");
-
-                    b.HasDiscriminator().HasValue("Derivative");
-                });
-
-            modelBuilder.Entity("FinlyticCore.Entities.Assets.EtfEntity", b =>
-                {
-                    b.HasBaseType("FinlyticCore.Entities.Assets.AssetEntity");
-
-                    b.Property<string>("DerivativeProductCategories")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("EtfDescription")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("MappedEtfIndexName")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("SearchSubtitle")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.Property<string>("Subtitle")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.ToTable("TradeRepublicAssets", t =>
-                        {
-                            t.Property("DerivativeProductCategories")
-                                .HasColumnName("EtfEntity_DerivativeProductCategories");
-
-                            t.Property("SearchSubtitle")
-                                .HasColumnName("EtfEntity_SearchSubtitle");
-
-                            t.Property("Subtitle")
-                                .HasColumnName("EtfEntity_Subtitle");
-                        });
-
-                    b.HasDiscriminator().HasValue("Etf");
-                });
-
-            modelBuilder.Entity("FinlyticCore.Entities.Assets.StockEntity", b =>
-                {
-                    b.HasBaseType("FinlyticCore.Entities.Assets.AssetEntity");
-
-                    b.Property<string>("DerivativeProductCategories")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.ToTable("TradeRepublicAssets", t =>
-                        {
-                            t.Property("DerivativeProductCategories")
-                                .HasColumnName("StockEntity_DerivativeProductCategories");
-                        });
-
-                    b.HasDiscriminator().HasValue("Stock");
-                });
-
-            modelBuilder.Entity("FinlyticCore.Entities.Assets.SyntheticEntity", b =>
-                {
-                    b.HasBaseType("FinlyticCore.Entities.Assets.AssetEntity");
-
-                    b.Property<string>("DerivativeProductCategories")
-                        .IsRequired()
-                        .HasColumnType("text");
-
-                    b.ToTable("TradeRepublicAssets", t =>
-                        {
-                            t.Property("DerivativeProductCategories")
-                                .HasColumnName("SyntheticEntity_DerivativeProductCategories");
-                        });
-
-                    b.HasDiscriminator().HasValue("Synthetic");
-                });
-
-            modelBuilder.Entity("AssetEntityTagEntity", b =>
-                {
-                    b.HasOne("FinlyticCore.Entities.Assets.AssetEntity", null)
-                        .WithMany()
-                        .HasForeignKey("AssetsIsin")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
-
-                    b.HasOne("FinlyticCore.Entities.Assets.TagEntity", null)
-                        .WithMany()
-                        .HasForeignKey("TagsId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
-                });
-#pragma warning restore 612, 618
-        }
-    }
-}

FinlyticAssets/Migrations/20260628195842_AddedScannerState.cs

@@ -1,41 +0,0 @@
-using Microsoft.EntityFrameworkCore.Migrations;
-
-#nullable disable
-
-namespace FinlyticAssets.Migrations
-{
-    /// <inheritdoc />
-    public partial class AddedScannerState : Migration
-    {
-        /// <inheritdoc />
-        protected override void Up(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.AddColumn<int>(
-                name: "CurrentScanningPage",
-                table: "Settings",
-                type: "integer",
-                nullable: false,
-                defaultValue: 0);
-
-            migrationBuilder.AddColumn<string>(
-                name: "CurrentScanningType",
-                table: "Settings",
-                type: "character varying(50)",
-                maxLength: 50,
-                nullable: false,
-                defaultValue: "");
-        }
-
-        /// <inheritdoc />
-        protected override void Down(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.DropColumn(
-                name: "CurrentScanningPage",
-                table: "Settings");
-
-            migrationBuilder.DropColumn(
-                name: "CurrentScanningType",
-                table: "Settings");
-        }
-    }
-}

FinlyticAssets/Migrations/20260628204647_FixIsinKey.cs

@@ -1,107 +0,0 @@
-using Microsoft.EntityFrameworkCore.Migrations;
-
-#nullable disable
-
-namespace FinlyticAssets.Migrations
-{
-    /// <inheritdoc />
-    public partial class FixIsinKey : Migration
-    {
-        /// <inheritdoc />
-        protected override void Up(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.DropForeignKey(
-                name: "FK_AssetEntityTagEntity_TradeRepublicAssets_AssetsIsin",
-                table: "AssetEntityTagEntity");
-
-            migrationBuilder.DropPrimaryKey(
-                name: "PK_TradeRepublicAssets",
-                table: "TradeRepublicAssets");
-
-            migrationBuilder.DropPrimaryKey(
-                name: "PK_AssetEntityTagEntity",
-                table: "AssetEntityTagEntity");
-
-            migrationBuilder.DropIndex(
-                name: "IX_AssetEntityTagEntity_TagsId",
-                table: "AssetEntityTagEntity");
-
-            migrationBuilder.AddColumn<string>(
-                name: "AssetsInstrumentCategory",
-                table: "AssetEntityTagEntity",
-                type: "text",
-                nullable: false,
-                defaultValue: "");
-
-            migrationBuilder.AddPrimaryKey(
-                name: "PK_TradeRepublicAssets",
-                table: "TradeRepublicAssets",
-                columns: new[] { "Isin", "InstrumentCategory" });
-
-            migrationBuilder.AddPrimaryKey(
-                name: "PK_AssetEntityTagEntity",
-                table: "AssetEntityTagEntity",
-                columns: new[] { "TagsId", "AssetsIsin", "AssetsInstrumentCategory" });
-
-            migrationBuilder.CreateIndex(
-                name: "IX_AssetEntityTagEntity_AssetsIsin_AssetsInstrumentCategory",
-                table: "AssetEntityTagEntity",
-                columns: new[] { "AssetsIsin", "AssetsInstrumentCategory" });
-
-            migrationBuilder.AddForeignKey(
-                name: "FK_AssetEntityTagEntity_TradeRepublicAssets_AssetsIsin_AssetsI~",
-                table: "AssetEntityTagEntity",
-                columns: new[] { "AssetsIsin", "AssetsInstrumentCategory" },
-                principalTable: "TradeRepublicAssets",
-                principalColumns: new[] { "Isin", "InstrumentCategory" },
-                onDelete: ReferentialAction.Cascade);
-        }
-
-        /// <inheritdoc />
-        protected override void Down(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.DropForeignKey(
-                name: "FK_AssetEntityTagEntity_TradeRepublicAssets_AssetsIsin_AssetsI~",
-                table: "AssetEntityTagEntity");
-
-            migrationBuilder.DropPrimaryKey(
-                name: "PK_TradeRepublicAssets",
-                table: "TradeRepublicAssets");
-
-            migrationBuilder.DropPrimaryKey(
-                name: "PK_AssetEntityTagEntity",
-                table: "AssetEntityTagEntity");
-
-            migrationBuilder.DropIndex(
-                name: "IX_AssetEntityTagEntity_AssetsIsin_AssetsInstrumentCategory",
-                table: "AssetEntityTagEntity");
-
-            migrationBuilder.DropColumn(
-                name: "AssetsInstrumentCategory",
-                table: "AssetEntityTagEntity");
-
-            migrationBuilder.AddPrimaryKey(
-                name: "PK_TradeRepublicAssets",
-                table: "TradeRepublicAssets",
-                column: "Isin");
-
-            migrationBuilder.AddPrimaryKey(
-                name: "PK_AssetEntityTagEntity",
-                table: "AssetEntityTagEntity",
-                columns: new[] { "AssetsIsin", "TagsId" });
-
-            migrationBuilder.CreateIndex(
-                name: "IX_AssetEntityTagEntity_TagsId",
-                table: "AssetEntityTagEntity",
-                column: "TagsId");
-
-            migrationBuilder.AddForeignKey(
-                name: "FK_AssetEntityTagEntity_TradeRepublicAssets_AssetsIsin",
-                table: "AssetEntityTagEntity",
-                column: "AssetsIsin",
-                principalTable: "TradeRepublicAssets",
-                principalColumn: "Isin",
-                onDelete: ReferentialAction.Cascade);
-        }
-    }
-}

FinlyticAssets/Migrations/20260801073314_Init.Designer.cs

@@ -1,4 +1,4 @@
-// <auto-generated />
+// <auto-generated />
 using System;
 using FinlyticAssets.Database;
 using Microsoft.EntityFrameworkCore;
@@ -12,8 +12,8 @@ using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
 namespace FinlyticAssets.Migrations
 {
     [DbContext(typeof(AssetsDbContext))]
-    [Migration("20260628204647_FixIsinKey")]
+    [Migration("20260801073314_Init")]
-    partial class FixIsinKey
+    partial class Init
     {
         /// <inheritdoc />
         protected override void BuildTargetModel(ModelBuilder modelBuilder)
@@ -72,21 +72,9 @@ namespace FinlyticAssets.Migrations
                     b.Property<int>("InitBatchAssetUpdateDelay")
                         .HasColumnType("integer");
 
-                    b.Property<int>("MaxRandomUpdateDay")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("MinRandomUpdateDay")
-                        .HasColumnType("integer");
-
                     b.Property<int>("TradeRepublicMaxRequestPageSize")
                         .HasColumnType("integer");
 
-                    b.Property<int>("UpdateDayTimeStart")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("UpdateDayTimeStop")
-                        .HasColumnType("integer");
-
                     b.HasKey("Id");
 
                     b.ToTable("Settings");
@@ -122,11 +110,10 @@ namespace FinlyticAssets.Migrations
                         .IsRequired()
                         .HasColumnType("text");
 
-                    b.Property<DateTime>("UpdateAt")
-                        .HasColumnType("timestamp with time zone");
-
                     b.HasKey("Isin", "InstrumentCategory");
 
+                    b.HasIndex("LastUpdatedAt");
+
                     b.ToTable("TradeRepublicAssets");
 
                     b.HasDiscriminator<string>("AssetType").HasValue("AssetEntity");

FinlyticAssets/Migrations/20260801073314_Init.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using Microsoft.EntityFrameworkCore.Migrations;
 
 #nullable disable
@@ -17,15 +17,13 @@ namespace FinlyticAssets.Migrations
                 {
                     Id = table.Column<Guid>(type: "uuid", nullable: false),
                     FinishedInitialScan = table.Column<bool>(type: "boolean", nullable: false),
-                    MinRandomUpdateDay = table.Column<int>(type: "integer", nullable: false),
-                    MaxRandomUpdateDay = table.Column<int>(type: "integer", nullable: false),
-                    UpdateDayTimeStart = table.Column<int>(type: "integer", nullable: false),
-                    UpdateDayTimeStop = table.Column<int>(type: "integer", nullable: false),
                     TradeRepublicMaxRequestPageSize = table.Column<int>(type: "integer", nullable: false),
                     AssetUpdateTypeDelay = table.Column<int>(type: "integer", nullable: false),
                     InitAssetUpdateTypeDelay = table.Column<int>(type: "integer", nullable: false),
                     InitBatchAssetUpdateDelay = table.Column<int>(type: "integer", nullable: false),
-                    BatchAssetUpdateDelay = table.Column<int>(type: "integer", nullable: false)
+                    BatchAssetUpdateDelay = table.Column<int>(type: "integer", nullable: false),
+                    CurrentScanningType = table.Column<string>(type: "character varying(50)", maxLength: 50, nullable: false),
+                    CurrentScanningPage = table.Column<int>(type: "integer", nullable: false)
                 },
                 constraints: table =>
                 {
@@ -37,12 +35,11 @@ namespace FinlyticAssets.Migrations
                 columns: table => new
                 {
                     Isin = table.Column<string>(type: "text", nullable: false),
+                    InstrumentCategory = table.Column<string>(type: "text", nullable: false),
                     Name = table.Column<string>(type: "text", nullable: false),
                     Type = table.Column<string>(type: "text", nullable: false),
-                    InstrumentCategory = table.Column<string>(type: "text", nullable: false),
                     HasCfd = table.Column<bool>(type: "boolean", nullable: false),
                     ImageId = table.Column<string>(type: "text", nullable: true),
-                    UpdateAt = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
                     LastUpdatedAt = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
                     AssetType = table.Column<string>(type: "character varying(13)", maxLength: 13, nullable: false),
                     BondIssuerName = table.Column<string>(type: "text", nullable: true),
@@ -61,7 +58,7 @@ namespace FinlyticAssets.Migrations
                 },
                 constraints: table =>
                 {
-                    table.PrimaryKey("PK_TradeRepublicAssets", x => x.Isin);
+                    table.PrimaryKey("PK_TradeRepublicAssets", x => new { x.Isin, x.InstrumentCategory });
                 });
 
             migrationBuilder.CreateTable(
@@ -81,17 +78,18 @@ namespace FinlyticAssets.Migrations
                 name: "AssetEntityTagEntity",
                 columns: table => new
                 {
+                    TagsId = table.Column<string>(type: "text", nullable: false),
                     AssetsIsin = table.Column<string>(type: "text", nullable: false),
-                    TagsId = table.Column<string>(type: "text", nullable: false)
+                    AssetsInstrumentCategory = table.Column<string>(type: "text", nullable: false)
                 },
                 constraints: table =>
                 {
-                    table.PrimaryKey("PK_AssetEntityTagEntity", x => new { x.AssetsIsin, x.TagsId });
+                    table.PrimaryKey("PK_AssetEntityTagEntity", x => new { x.TagsId, x.AssetsIsin, x.AssetsInstrumentCategory });
                     table.ForeignKey(
-                        name: "FK_AssetEntityTagEntity_TradeRepublicAssets_AssetsIsin",
+                        name: "FK_AssetEntityTagEntity_TradeRepublicAssets_AssetsIsin_AssetsI~",
-                        column: x => x.AssetsIsin,
+                        columns: x => new { x.AssetsIsin, x.AssetsInstrumentCategory },
                         principalTable: "TradeRepublicAssets",
-                        principalColumn: "Isin",
+                        principalColumns: new[] { "Isin", "InstrumentCategory" },
                         onDelete: ReferentialAction.Cascade);
                     table.ForeignKey(
                         name: "FK_AssetEntityTagEntity_TradeRepublicTags_TagsId",
@@ -102,9 +100,14 @@ namespace FinlyticAssets.Migrations
                 });
 
             migrationBuilder.CreateIndex(
-                name: "IX_AssetEntityTagEntity_TagsId",
+                name: "IX_AssetEntityTagEntity_AssetsIsin_AssetsInstrumentCategory",
                 table: "AssetEntityTagEntity",
-                column: "TagsId");
+                columns: new[] { "AssetsIsin", "AssetsInstrumentCategory" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_TradeRepublicAssets_LastUpdatedAt",
+                table: "TradeRepublicAssets",
+                column: "LastUpdatedAt");
         }
 
         /// <inheritdoc />

FinlyticAssets/Migrations/AssetsDbContextModelSnapshot.cs

@@ -1,4 +1,4 @@
-// <auto-generated />
+// <auto-generated />
 using System;
 using FinlyticAssets.Database;
 using Microsoft.EntityFrameworkCore;
@@ -69,21 +69,9 @@ namespace FinlyticAssets.Migrations
                     b.Property<int>("InitBatchAssetUpdateDelay")
                         .HasColumnType("integer");
 
-                    b.Property<int>("MaxRandomUpdateDay")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("MinRandomUpdateDay")
-                        .HasColumnType("integer");
-
                     b.Property<int>("TradeRepublicMaxRequestPageSize")
                         .HasColumnType("integer");
 
-                    b.Property<int>("UpdateDayTimeStart")
-                        .HasColumnType("integer");
-
-                    b.Property<int>("UpdateDayTimeStop")
-                        .HasColumnType("integer");
-
                     b.HasKey("Id");
 
                     b.ToTable("Settings");
@@ -119,11 +107,10 @@ namespace FinlyticAssets.Migrations
                         .IsRequired()
                         .HasColumnType("text");
 
-                    b.Property<DateTime>("UpdateAt")
-                        .HasColumnType("timestamp with time zone");
-
                     b.HasKey("Isin", "InstrumentCategory");
 
+                    b.HasIndex("LastUpdatedAt");
+
                     b.ToTable("TradeRepublicAssets");
 
                     b.HasDiscriminator<string>("AssetType").HasValue("AssetEntity");

FinlyticAssets/Models/AssetIndex.cs

@@ -1,7 +0,0 @@
-using System.Text.Json.Serialization;
-
-namespace FinlyticAssets.Models;
-
-public record AssetIndex(
-    [property: JsonPropertyName("isin")] string Isin,
-    [property: JsonPropertyName("name")] string Name);

FinlyticAssets/Models/AssetsCount.cs

@@ -1,39 +0,0 @@
-using FinlyticCore.Models.Assets;
-
-namespace FinlyticAssets.Models;
-
-public class AssetsCount
-{
-    public int Stock { get; set; }
-    public int Funds { get; set; }
-    public int Derivatives { get; set; }
-    public int Crypto { get; set; }
-    public int Bond { get; set; }
-
-    public int GetCountFromType(AssetType type)
-    {
-        return type switch
-        {
-            AssetType.Stock => Stock,
-            AssetType.Fund => Funds,
-            AssetType.Derivative => Derivatives,
-            AssetType.Crypto => Crypto,
-            AssetType.Bond => Bond,
-            _ => throw new ArgumentOutOfRangeException(nameof(type), type, null)
-        };
-    }
-
-
-    public void SetCountOfType(AssetType type, int count)
-    {
-        _ = type switch
-        {
-            AssetType.Stock => Stock = count,
-            AssetType.Fund => Funds = count,
-            AssetType.Derivative => Derivatives = count,
-            AssetType.Crypto => Crypto = count,
-            AssetType.Bond => Bond = count,
-            _ => throw new ArgumentOutOfRangeException(nameof(type), type, null)
-        };
-    }
-}

FinlyticAssets/Models/DataToObject/TradeRepublic/TradeRepublicAssetResponse.cs

@@ -1,139 +0,0 @@
-namespace FinlyticAssets.Models.DataToObject.TradeRepublic;
-
-using System;
-using System.Collections.Generic;
-using System.Text.Json;
-using System.Text.Json.Serialization;
-
-// 1. Der Response-Wrapper
-public record TradeRepublicAssetResponse(
-    [property: JsonPropertyName("correlationId")] string CorrelationId,
-    [property: JsonPropertyName("resultCount")] int ResultCount,
-    [property: JsonPropertyName("results")] IList<TradeRepublicAsset> Results
-);
-
-// 2. Das Tag-Objekt
-public record TradeRepublicTag
-{
-    [JsonPropertyName("id")] public string Id { get; init; } = "";
-    [JsonPropertyName("name")] public string Name { get; init; } = "";
-    [JsonPropertyName("type")] public string Type { get; init; } = "";
-}
-
-// 3. Die Basisklasse MIT UNSEREM CUSTOM CONVERTER (Kein [JsonPolymorphic] mehr!)
-[JsonConverter(typeof(TradeRepublicAssetConverter))]
-public record TradeRepublicAsset
-{
-    [JsonPropertyName("isin")] public string Isin { get; init; } = "";
-    [JsonPropertyName("name")] public string Name { get; init; } = "";
-    [JsonPropertyName("type")] public string Type { get; init; } = "";
-    [JsonPropertyName("instrumentCategory")] public string InstrumentCategory { get; init; } = "";
-    [JsonPropertyName("hasCfd")] public bool HasCfd { get; init; }
-    [JsonPropertyName("imageId")] public string? ImageId { get; init; }
-    
-    [JsonPropertyName("tags")] 
-    public IReadOnlyList<TradeRepublicTag> Tags { get; init; } = Array.Empty<TradeRepublicTag>();
-}
-
-// 4. Die spezifischen Klassen (inklusive Bond und Derivative aus deinem JSON!)
-
-public record TradeRepublicStock : TradeRepublicAsset
-{
-    [JsonPropertyName("derivativeProductCategories")] 
-    public IReadOnlyList<string> DerivativeProductCategories { get; init; } = Array.Empty<string>();
-}
-
-public record TradeRepublicCrypto : TradeRepublicAsset
-{
-    [JsonPropertyName("subtitle")] public string Subtitle { get; init; } = "";
-    [JsonPropertyName("searchSubtitle")] public string SearchSubtitle { get; init; } = "";
-}
-
-public record TradeRepublicEtf : TradeRepublicAsset
-{
-    [JsonPropertyName("derivativeProductCategories")] 
-    public IReadOnlyList<string> DerivativeProductCategories { get; init; } = Array.Empty<string>();
-    [JsonPropertyName("etfDescription")] public string EtfDescription { get; init; } = "";
-    [JsonPropertyName("mappedEtfIndexName")] public string MappedEtfIndexName { get; init; } = "";
-    [JsonPropertyName("subtitle")] public string Subtitle { get; init; } = "";
-    [JsonPropertyName("searchSubtitle")] public string SearchSubtitle { get; init; } = "";
-}
-
-public record TradeRepublicSynthetic : TradeRepublicAsset
-{
-    [JsonPropertyName("derivativeProductCategories")] 
-    public IReadOnlyList<string> DerivativeProductCategories { get; init; } = Array.Empty<string>();
-}
-
-// NEU: Anleihen
-public record TradeRepublicBond : TradeRepublicAsset
-{
-    [JsonPropertyName("bondIssuerName")] public string BondIssuerName { get; init; } = "";
-    [JsonPropertyName("searchSubtitle")] public string SearchSubtitle { get; init; } = "";
-}
-
-// NEU: Derivate (Hebeleffekte etc.)
-public record TradeRepublicDerivative : TradeRepublicAsset
-{
-    [JsonPropertyName("derivativeProductCategories")] 
-    public IReadOnlyList<string> DerivativeProductCategories { get; init; } = Array.Empty<string>();
-    
-    [JsonIgnore]
-    public string? UnderlyingIsin
-    {
-        get
-        {
-            // Wenn die ImageId z.B. "logos/US0378331005/v2" ist...
-            if (!string.IsNullOrEmpty(ImageId) && ImageId.StartsWith("logos/"))
-            {
-                var parts = ImageId.Split('/');
-                if (parts.Length >= 2)
-                {
-                    return parts[1]; // Gibt "US0378331005" zurück
-                }
-            }
-            return null; // Falls das Format mal anders ist
-        }
-    }
-}
-
-// 5. Der Custom Converter - Die Maschine, die das JSON scannt und verteilt
-public class TradeRepublicAssetConverter : JsonConverter<TradeRepublicAsset>
-{
-    public override TradeRepublicAsset Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
-    {
-        using var doc = JsonDocument.ParseValue(ref reader);
-        var root = doc.RootElement;
-
-        // Wir scannen nach instrumentType, egal wo im JSON es steht!
-        string? instrumentType = null;
-        if (root.TryGetProperty("instrumentType", out var typeElement))
-        {
-            instrumentType = typeElement.GetString();
-        }
-
-        // Wir werfen das JSON gezielt in die richtige Klasse
-        TradeRepublicAsset? result = instrumentType switch
-        {
-            "stock" => JsonSerializer.Deserialize<TradeRepublicStock>(root.GetRawText(), options),
-            "crypto" => JsonSerializer.Deserialize<TradeRepublicCrypto>(root.GetRawText(), options),
-            "fund" => JsonSerializer.Deserialize<TradeRepublicEtf>(root.GetRawText(), options),
-            "synthetic" => JsonSerializer.Deserialize<TradeRepublicSynthetic>(root.GetRawText(), options),
-            "bond" => JsonSerializer.Deserialize<TradeRepublicBond>(root.GetRawText(), options),
-            "derivative" => JsonSerializer.Deserialize<TradeRepublicDerivative>(root.GetRawText(), options),
-            
-            // Wenn TR einen Typ schickt, den wir noch nicht kennen: Fallback nutzen!
-            _ => JsonSerializer.Deserialize<TradeRepublicAssetFallback>(root.GetRawText(), options)
-        };
-
-        return result ?? new TradeRepublicAssetFallback();
-    }
-
-    public override void Write(Utf8JsonWriter writer, TradeRepublicAsset value, JsonSerializerOptions options)
-    {
-        JsonSerializer.Serialize(writer, value, value.GetType(), options);
-    }
-}
-
-// Ein reiner Fallback-Record, der nur intern vom Converter genutzt wird
-file record TradeRepublicAssetFallback : TradeRepublicAsset;

FinlyticAssets/Models/DataToObject/TradeRepublic/TradeRepublicConnectRequest.cs

@@ -1,16 +0,0 @@
-using System.Text.Json.Serialization;
-
-namespace FinlyticAssets.Models.DataToObject.TradeRepublic;
-
-public record TradeRepublicConnectRequest(
-    [property: JsonPropertyName("clientId")] string ClientId = "app.traderepublic.com",
-    [property: JsonPropertyName("clientVersion")] string ClientVersion = "15.65.6",
-    [property: JsonPropertyName("locale")] string Locale = "en",
-    [property: JsonPropertyName("platformId")] string PlatformId = "webtrading",
-    [property: JsonPropertyName("platformVersion")] string PlatformVersion = "chrome - 149.0.0",
-    TradeRepublicHeaders? Headers = null
-)
-{
-    [JsonPropertyName("__headers")]
-    public TradeRepublicHeaders Headers { get; init; } = Headers ?? new TradeRepublicHeaders();
-}

FinlyticAssets/Models/DataToObject/TradeRepublic/TradeRepublicHeaders.cs

@@ -1,12 +0,0 @@
-using System.Text.Json.Serialization;
-using FinlyticAssets.Util;
-
-namespace FinlyticAssets.Models.DataToObject.TradeRepublic;
-
-public record TradeRepublicHeaders(
-    [property: JsonPropertyName("traceparent")] string Traceparent
-)
-{
-    public TradeRepublicHeaders() : this(StringCodeGenerator.GenerateTraceparent())
-    {}
-}

FinlyticAssets/Models/DataToObject/TradeRepublic/TradeRepublicSearchRequest.cs

@@ -1,30 +0,0 @@
-using System.Text.Json.Serialization;
-using FinlyticAssets.Util;
-
-namespace FinlyticAssets.Models.DataToObject.TradeRepublic;
-
-public record TradeRepublicFilter(
-    [property: JsonPropertyName("key")] string Key,
-    [property: JsonPropertyName("value")] string Value
-);
-
-public record TradeRepublicSearchData(
-    [property: JsonPropertyName("q")] string Query = "",
-    [property: JsonPropertyName("page")] int Page = 1,
-    [property: JsonPropertyName("pageSize")] int PageSize = 50,
-    IReadOnlyList<TradeRepublicFilter>? Filter = null
-)
-{
-    [JsonPropertyName("filter")]
-    public IReadOnlyList<TradeRepublicFilter> Filter { get; init; } = Filter ?? Array.Empty<TradeRepublicFilter>();
-}
-
-public record TradeRepublicSearchRequest(
-    [property: JsonPropertyName("data")] TradeRepublicSearchData Data,
-    [property: JsonPropertyName("type")] string Type = "neonSearch",
-    TradeRepublicHeaders? Headers = null
-)
-{
-    [JsonPropertyName("__headers")]
-    public TradeRepublicHeaders Headers { get; init; } = Headers ?? new TradeRepublicHeaders();
-}

FinlyticAssets/Program.cs

@@ -1,9 +1,10 @@
 using System.Text.Json;
 using FinlyticAssets;
 using FinlyticAssets.Database;
-using FinlyticAssets.Models.DataToObject.TradeRepublic;
+using FinlyticCore.Services.TradeRepublic;
-using FinlyticAssets.Services;
 using FinlyticAssets.Util;
+using FinlyticAssets.Services;
+using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore;
 
 var builder = Host.CreateApplicationBuilder(args);
@@ -19,10 +20,10 @@ builder.Services.AddScoped<ISettingsDbService, SettingsDbService>();
 builder.Services.AddScoped<IAssetsIndexService, AssetsIndexService>();
 
 builder.Services.AddSingleton<AssetsMqttClient>();
+builder.Services.AddHostedService(sp => sp.GetRequiredService<AssetsMqttClient>());
 
-builder.Services.AddHostedService<MqttConnectionService>();
+builder.Services.AddHostedService<AssetScannerBackgroundService>();
-
+builder.Services.AddHostedService<LogoFetcherBackgroundService>();
-builder.Services.AddHostedService<AssetsFullScanService>();
 
 var host = builder.Build();
 
@@ -32,6 +33,17 @@ using (var scope = host.Services.CreateScope())
     {
         var context = scope.ServiceProvider.GetRequiredService<AssetsDbContext>();
         await context.Database.MigrateAsync();
+
+        // Fix: Reset InitAssetUpdateTypeDelay from old default (3600s) to new default (0s = no delay).
+        // This ensures the scanner moves immediately to the next asset type during the initial scan.
+        var settingsService = scope.ServiceProvider.GetRequiredService<ISettingsDbService>();
+        var settings = await settingsService.GetSettings();
+        if (settings.InitAssetUpdateTypeDelay == 3600)
+        {
+            settings.InitAssetUpdateTypeDelay = 0;
+            await settingsService.SaveSettings(settings);
+            Console.WriteLine("[Startup] InitAssetUpdateTypeDelay reset from 3600 to 0.");
+        }
     }
     catch (Exception ex)
     {

FinlyticAssets/Project.md

@@ -0,0 +1,67 @@
+# Finlytic Assets Service
+
+Finlytic Assets is a scalable C# microservice designed for asset discovery, metadata ingestion, and quick querying. It interfaces directly with the Trade Republic API via WebSockets and exposes a high-performance RPC interface over MQTT to other services in the Finlytic ecosystem.
+
+---
+
+## Architecture Overview
+
+```mermaid
+graph TD
+    TR[Trade Republic WebSocket API] <-->|WS Protocol| TRS[TradeRepublicService]
+    TRS <-->|Ingest| ADS[AssetsFullScanService]
+    ADS <-->|Save / Update| DB[PostgreSQL Database]
+    DB -->|Trigger Index Update| AIS[AssetsIndexService]
+    AIS -->|Write Cache| Index[assets/index/index.json]
+
+    MS[Other Finlytic Services] <-->|MQTT Request-Reply| MqttClient[AssetsMqttClient]
+    MqttClient <-->|Query Cache| DB
+```
+
+---
+
+## Core Features & Workflows
+
+### 1. Automated WebSocket scraping
+- **Continuous Scan**: The background worker (`AssetsFullScanService`) iterates through all supported asset types:
+  - **Stocks** (`StockEntity`)
+  - **Crypto** (`CryptoEntity`)
+  - **Derivatives** (`DerivativeEntity`)
+  - **Bonds** (`BondEntity`)
+  - **Funds/ETFs** (`EtfEntity`)
+- **Resilient Reconnection**: Uses a robust custom socket wrapper (`TradeRepublicClient`) that closes automatically after 5 minutes of inactivity to mimic human interaction profiles and reconnects dynamically when a request is made.
+
+### 2. Scanner State Persistence & Crash Recovery
+- **Resilient State**: The scan loop continuously persists progress to the database (`Settings` table), recording `CurrentScanningType` and `CurrentScanningPage`.
+- **Exit Recovery**: Resumes exactly from the last saved page and asset type upon restart.
+
+### 3. Stealth Scheduling with Randomized Jitter
+- **Dynamic Delays**: Scanner wait times are read dynamically from database configuration (`Settings`).
+- **Jitter Offset**: Randomized offsets between batches and asset types to prevent rate limiting.
+
+### 4. Active vs. Dead Asset Tracking
+- **Recency Filter**: Assets updated within 14 days are active. Inactive assets are flagged.
+
+### 5. MQTT RPC Interface
+- **Get Asset by ISIN**: Subscribes to `services/request/assets_Get/#`.
+- **Omnibox Search**: Subscribes to `services/request/assets_Search/#`.
+- **JIT Fallback**: Performs JIT-lookup directly against the Trade Republic API for unknown ISINs.
+
+### 6. Local Indexing File (`index.json`)
+- **Automatic Regeneration**: Serializes active assets list (`ISIN`, `Name`) to shared volume `assets/index/index.json`.
+
+---
+
+## Feature Status
+
+### Implemented Features
+- [x] Trade Republic WebSocket scanner for Stocks, Crypto, Derivatives, Bonds, ETFs.
+- [x] State persistence & crash recovery in PostgreSQL.
+- [x] JIT Trade Republic lookup fallback for new ISINs.
+- [x] Shared local index file generation (`index.json`).
+- [x] Zero-Allocation MQTT RPC handlers.
+- [x] Pure Worker Service architecture (No Kestrel HTTP server).
+
+### Planned Features
+- [ ] Real-time WebSocket price tick streaming over MQTT topic `finlytic/assets/ticks/{isin}`.
+- [ ] Derivative option-chain Greeks calculator integration.

FinlyticAssets/Services/AssetScannerBackgroundService.cs

@@ -0,0 +1,230 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using FinlyticAssets.Models;
+using FinlyticCore.Models.Assets;
+using FinlyticCore.Models.TradeRepublic;
+using FinlyticCore.Services.TradeRepublic;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+
+namespace FinlyticAssets.Services;
+
+/// <summary>
+/// A background service that runs a continuous asset synchronization loop,
+/// scanning Trade Republic to retrieve, update, and index all supported asset types.
+/// </summary>
+public class AssetScannerBackgroundService : BackgroundService
+{
+    private readonly IServiceScopeFactory _serviceScopeFactory;
+    private readonly ILogger<AssetScannerBackgroundService> _logger;
+
+    private AssetsCount? _assetsCount;
+    private AssetsCount? _currAssetsCount;
+
+    public AssetScannerBackgroundService(IServiceScopeFactory serviceScopeFactory, ILogger<AssetScannerBackgroundService> logger)
+    {
+        _serviceScopeFactory = serviceScopeFactory;
+        _logger = logger;
+    }
+
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        _logger.LogInformation("[{Channel}] AssetScannerBackgroundService has started.", "AssetsChannel");
+        
+        try
+        {
+            using var scope = _serviceScopeFactory.CreateScope();
+            var indexService = scope.ServiceProvider.GetRequiredService<IAssetsIndexService>();
+            _logger.LogInformation("[{Channel}] Building initial asset index on service startup...", "AssetsChannel");
+            await indexService.ReCreateIndexFileAsync(stoppingToken);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "[{Channel}] Failed to build initial asset index on startup. Continuing service execution.", "AssetsChannel");
+        }
+        
+        do
+        {
+            try
+            {
+                using var scope = _serviceScopeFactory.CreateScope();
+                var tradeRepublicService = scope.ServiceProvider.GetRequiredService<ITradeRepublicService>();
+                var settingsService = scope.ServiceProvider.GetRequiredService<ISettingsDbService>();
+                var assetsDbService = scope.ServiceProvider.GetRequiredService<IAssetsDbService>();
+                var indexService = scope.ServiceProvider.GetRequiredService<IAssetsIndexService>();
+                
+                _logger.LogInformation("[{Channel}] Requesting total asset counts from Trade Republic...", "AssetsChannel");
+                _assetsCount = await tradeRepublicService.GetAssetsCount(stoppingToken);
+                _currAssetsCount = new AssetsCount();
+                
+                var initSettings = await settingsService.GetSettings();
+                var isRecoveryMode = initSettings.CurrentScanningPage > 0;
+
+                foreach (var type in Enum.GetValues<AssetType>())
+                {
+                    if (stoppingToken.IsCancellationRequested) break;
+
+                    if (isRecoveryMode)
+                    {
+                        if (type != initSettings.CurrentScanningType)
+                        {
+                            _logger.LogInformation("[{Channel}] Recovery: {AssetType} was already processed. Skipping.", "AssetsChannel", type);
+                            continue;
+                        }
+                        isRecoveryMode = false;
+                    }
+                    else
+                    {
+                        var settings = await settingsService.GetSettings();
+                        settings.CurrentScanningType = type;
+                        settings.CurrentScanningPage = 0;
+                        await settingsService.SaveSettings(settings);
+                    }
+
+                    _logger.LogInformation("[{Channel}] Processing asset type: {AssetType}...", "AssetsChannel", type);
+                    await HandleAssetType(type, tradeRepublicService, settingsService, assetsDbService, indexService, stoppingToken);
+
+                    var currentSettings = await settingsService.GetSettings();
+                    var delaySeconds = currentSettings.FinishedInitialScan 
+                        ? currentSettings.AssetUpdateTypeDelay 
+                        : currentSettings.InitAssetUpdateTypeDelay;
+
+                    if (delaySeconds > 0)
+                    {
+                        var jitter = Random.Shared.Next(0, Math.Min(15, delaySeconds));
+                        _logger.LogInformation("[{Channel}] Waiting {Delay}s before next asset type ({Type}).", "AssetsChannel", delaySeconds + jitter, type);
+                        await Task.Delay(TimeSpan.FromSeconds(delaySeconds + jitter), stoppingToken);
+                    }
+                }
+
+                var finalSettings = await settingsService.GetSettings();
+                finalSettings.CurrentScanningPage = 0;
+                
+                if (!finalSettings.FinishedInitialScan && !stoppingToken.IsCancellationRequested)
+                {
+                    _logger.LogInformation("[{Channel}] Initial scan successfully completed. Switching FinishedInitialScan to true.", "AssetsChannel");
+                    finalSettings.FinishedInitialScan = true;
+                }
+                
+                await settingsService.SaveSettings(finalSettings);
+                
+                _logger.LogInformation("[{Channel}] Full scan cycle completed. Waiting 1 minute before starting the next cycle.", "AssetsChannel");
+                await Task.Delay(TimeSpan.FromMinutes(1), stoppingToken);
+            }
+            catch (Exception e) when (!stoppingToken.IsCancellationRequested)
+            {
+                _logger.LogError(e, "[{Channel}] An unhandled exception occurred in AssetScannerBackgroundService. Retrying in 10 seconds.", "AssetsChannel");
+                try { await Task.Delay(TimeSpan.FromSeconds(10), stoppingToken); } catch { /* Ignore */ }
+            }
+        } while (!stoppingToken.IsCancellationRequested);
+
+        _logger.LogInformation("[{Channel}] AssetScannerBackgroundService is stopping.", "AssetsChannel");
+    }
+
+    private async Task HandleAssetType(
+        AssetType type, 
+        ITradeRepublicService tradeRepublicService,
+        ISettingsDbService settingsDbService, 
+        IAssetsDbService assetsDbService, 
+        IAssetsIndexService indexService, 
+        CancellationToken stoppingToken)
+    {
+        var totalCount = _assetsCount?.GetCountFromType(type) ?? 0;
+        if (totalCount == 0)
+        {
+            _logger.LogWarning("[{Channel}] No assets found for type {AssetType}.", "AssetsChannel", type);
+            return;
+        }
+
+        _currAssetsCount ??= new AssetsCount();
+        var currentItemOffset = 0;
+
+        var settings = await settingsDbService.GetSettings();
+        var pageSize = Math.Clamp(settings.TradeRepublicMaxRequestPageSize <= 0 ? 50 : settings.TradeRepublicMaxRequestPageSize, 1, 100);
+
+        if (settings.CurrentScanningType == type && settings.CurrentScanningPage > 0)
+        {
+            currentItemOffset = (settings.CurrentScanningPage - 1) * pageSize;
+            _logger.LogInformation("[{Channel}] Resuming full scan for {AssetType} from Page {Page} (Calculated Offset: {Offset}).", 
+                "AssetsChannel", type, settings.CurrentScanningPage, currentItemOffset);
+        }
+
+        while (currentItemOffset < totalCount && !stoppingToken.IsCancellationRequested)
+        {
+            var currentSettings = await settingsDbService.GetSettings();
+            pageSize = Math.Clamp(currentSettings.TradeRepublicMaxRequestPageSize <= 0 ? 50 : currentSettings.TradeRepublicMaxRequestPageSize, 1, 100);
+
+            var currentPage = (currentItemOffset / pageSize) + 1;
+
+            currentSettings.CurrentScanningType = type;
+            currentSettings.CurrentScanningPage = currentPage;
+            await settingsDbService.SaveSettings(currentSettings);
+
+            _logger.LogDebug("Fetching {AssetType} - Page {Page}. Numerical Offset: {Offset}/{Total}",
+                type, currentPage, currentItemOffset, totalCount);
+
+            var assets = await tradeRepublicService.GetAssets(type, currentPage, pageSize, stoppingToken);
+
+            // Keine Ergebnisse geliefert -> Katalogende erreicht
+            if (assets?.Results == null || assets.Results.Count == 0)
+            {
+                _logger.LogInformation("[{Channel}] Fetch for {AssetType} (Page {Page}) returned no results. Reached end of available assets.", "AssetsChannel", type, currentPage);
+                currentSettings.CurrentScanningPage = 0;
+                await settingsDbService.SaveSettings(currentSettings);
+                break;
+            }
+
+            await ProcessAssets(assets.Results, assetsDbService, indexService, stoppingToken);
+            _currAssetsCount.SetCountOfType(type, _currAssetsCount.GetCountFromType(type) + assets.Results.Count);
+
+            currentItemOffset += assets.Results.Count;
+
+            // Unvollständige Seite -> Letzte Seite abgearbeitet
+            if (assets.Results.Count < pageSize)
+            {
+                _logger.LogInformation("[{Channel}] Reached the last page for {AssetType}.", "AssetsChannel", type);
+                currentSettings.CurrentScanningPage = 0;
+                await settingsDbService.SaveSettings(currentSettings);
+                break;
+            }
+
+            var delaySeconds = currentSettings.FinishedInitialScan
+                ? currentSettings.BatchAssetUpdateDelay
+                : currentSettings.InitBatchAssetUpdateDelay;
+
+            if (delaySeconds > 0)
+            {
+                // Angemessener Jitter (0 bis max. 5 Sek. bzw. kleiner als delaySeconds)
+                var maxJitter = Math.Min(5, delaySeconds);
+                var jitter = Random.Shared.Next(0, maxJitter + 1);
+                _logger.LogDebug("Waiting {Delay} seconds before the next batch.", delaySeconds + jitter);
+                await Task.Delay(TimeSpan.FromSeconds(delaySeconds + jitter), stoppingToken);
+            }
+        }
+
+        _logger.LogInformation("[{Channel}] Finished scanning {AssetType}. Total scanned in this cycle: {Count}/{Total}", 
+            "AssetsChannel", type, _currAssetsCount.GetCountFromType(type), totalCount);
+    }
+
+    private async Task ProcessAssets(
+        IList<TradeRepublicAsset> assets, 
+        IAssetsDbService assetsDbService, 
+        IAssetsIndexService indexService, 
+        CancellationToken stoppingToken)
+    {
+        if (assets == null || assets.Count == 0) return;
+
+        var changedRows = await assetsDbService.AddOrUpdateAssetsAsync(assets);
+        _logger.LogInformation("[{Channel}] [Scan] {Count} assets passed to the DB service. {Changed} modifications/inserts executed.", "AssetsChannel", assets.Count, changedRows);
+        
+        if (changedRows > 0)
+        {
+            _logger.LogInformation("[{Channel}] Database modifications detected. Recreating the asset index file...", "AssetsChannel");
+            await indexService.ReCreateIndexFileAsync(stoppingToken);
+        }
+    }
+}

FinlyticAssets/Services/AssetsDbService.cs

@@ -1,7 +1,8 @@
 using FinlyticAssets.Database;
 using FinlyticAssets.Entities;
-using FinlyticAssets.Models.DataToObject.TradeRepublic;
 using FinlyticCore.Entities.Assets;
+using FinlyticCore.Models.TradeRepublic;
+using FinlyticCore.Services.TradeRepublic;
 using Microsoft.EntityFrameworkCore;
 
 namespace FinlyticAssets.Services;
@@ -11,63 +12,15 @@ namespace FinlyticAssets.Services;
 /// </summary>
 public interface IAssetsDbService
 {
-    
-    /// <summary>
-    /// Retrieves all active assets from the database that have been updated within the last 14 days, including their associated tags.
-    /// Assets older than 14 days are filtered out as they are considered de-listed or inactive.
-    /// </summary>
-    /// <returns>A task that represents the asynchronous operation. The task result contains a list of all active <see cref="AssetEntity"/> instances.</returns>
     public Task<List<AssetEntity>> GetAllValidAssetsAsync();
-    
-    /// <summary>
-    /// Adds a new asset or updates an existing one based on the composite key of ISIN and InstrumentType.
-    /// </summary>
-    /// <param name="dtoAsset">The incoming asset data transfer object from the API.</param>
-    /// <returns>A task that represents the asynchronous operation. The task result contains <c>true</c> if the asset was updated or created; otherwise, <c>false</c>.</returns>
     public Task<bool> AddOrUpdateAssetAsync(TradeRepublicAsset dtoAsset);
-
-    /// <summary>
-    /// Batches processing for a collection of asset items, returning the total amount of modified or newly added entries.
-    /// </summary>
-    /// <param name="dtoAssets">The collection of incoming asset objects to process.</param>
-    /// <returns>A task that represents the asynchronous operation. The task result contains the count of changed or added entries.</returns>
     public Task<int> AddOrUpdateAssetsAsync(IEnumerable<TradeRepublicAsset> dtoAssets);
-
-    /// <summary>
-    /// Retrieves all assets matching a specific International Securities Identification Number (ISIN).
-    /// Can return multiple entities (e.g., both the stock and the derivative tracking asset for the same ISIN).
-    /// </summary>
-    /// <param name="isin">The ISIN value to look up.</param>
-    /// <returns>A task that represents the asynchronous operation. The task result contains a list of matching <see cref="AssetEntity"/> instances.</returns>
     public Task<List<AssetEntity>> GetAssetsByIsinAsync(string isin);
-
-    /// <summary>
-    /// Retrieves all assets matching a specific ISIN only if they have been updated within the last 14 days.
-    /// Assets older than 14 days are considered de-listed or inactive.
-    /// </summary>
-    /// <param name="isin">The ISIN value to look up.</param>
-    /// <returns>A task that represents the asynchronous operation. The task result contains a list of matching active <see cref="AssetEntity"/> instances.</returns>
     public Task<List<AssetEntity>> GetValidAssetsByIsinAsync(string isin);
-
-    /// <summary>
-    /// Scans the database for active assets matching a combined, comma-separated search query. 
-    /// The search applies an AND-logic approach where every extracted keyword must be found within an asset's ISIN, name, or tags.
-    /// Evaluates local records first and utilizes a targeted JIT-fallback to the external API for any search term formatted as a valid, completely unknown ISIN.
-    /// </summary>
-    /// <param name="searchQuery">A comma-separated string containing the keywords, ISINs, or tags to search for (e.g., "Siemens, Medic" or "IE00B4L5Y983, ETF").</param>
-    /// <returns>A task that represents the asynchronous operation. The task result contains a list of all affected active <see cref="AssetEntity"/> instances.</returns>
     public Task<List<AssetEntity>> FindAffectedActiveAssetsAsync(string searchQuery);
-
+    public Task UpdateAssetImageIdAsync(string isin, string imageId);
-    /// <summary>
-    /// Deletes all asset records associated with a specific ISIN from the database.
-    /// </summary>
-    /// <remarks>
-    /// Use with caution. For standard maintenance and handling de-listed instruments, 
-    /// rely on the 14-day recency filter provided by <see cref="GetValidAssetsByIsinAsync"/> instead of hard deletion.
-    /// </remarks>
-    /// <param name="isin">The ISIN value of the assets to remove.</param>
-    /// <returns>A task that represents the asynchronous operation. The task result contains <c>true</c> if any records were successfully deleted; otherwise, <c>false</c>.</returns>
     public Task<bool> DeleteAssetAsync(string isin);
+    public Task<List<AssetEntity>> GetDiscoveryAssetsAsync(int limit = 15);
 }
 
 /// <inheritdoc />
@@ -76,33 +29,77 @@ public class AssetsDbService : IAssetsDbService
     private readonly AssetsDbContext _context;
     private readonly ITradeRepublicService _tradeRepublicService;
     private readonly ILogger<AssetsDbService> _logger;
-    private readonly Random _random = new();
 
-    /// <summary>
+    public AssetsDbService(AssetsDbContext context, ILogger<AssetsDbService> logger, ITradeRepublicService tradeRepublicService)
-    /// Initializes a new instance of the <see cref="AssetsDbService"/> class.
-    /// </summary>
-    public AssetsDbService(AssetsDbContext context, ILogger<AssetsDbService> logger,
-        ITradeRepublicService tradeRepublicService)
     {
         _context = context;
         _logger = logger;
         _tradeRepublicService = tradeRepublicService;
     }
 
-    /// <inheritdoc />
+    /// <summary>Inherits documentation from interface.</summary>
-    public async Task<List<AssetEntity>> GetAllValidAssetsAsync()
+    public async Task<List<AssetEntity>> GetDiscoveryAssetsAsync(int limit = 15)
     {
-        var cutoff = DateTime.UtcNow.AddDays(-14);
+        var cutoff = DateTime.UtcNow.AddDays(-90);
 
-        var existingEntity = await _context.TradeRepublicAssets
+        var validAssets = await _context.TradeRepublicAssets
+            .AsNoTracking()
             .Include(a => a.Tags)
-            .Where(a => a.UpdateAt >= cutoff)
+            .Where(a => a.LastUpdatedAt >= cutoff && !string.IsNullOrEmpty(a.Name))
             .ToListAsync();
 
-        return existingEntity;
+        if (validAssets.Count == 0) return [];
+
+        var scored = validAssets
+            .Select(a => new
+            {
+                Asset = a,
+                Score = (a.Tags?.Count ?? 0) * 10
+                      + (a.HasCfd ? 5 : 0)
+                      + (string.IsNullOrEmpty(a.ImageId) ? 0 : 15)
+                      + (a.Name.Length > 3 ? 5 : 0)
+            })
+            .OrderByDescending(x => x.Score)
+            .ThenByDescending(x => x.Asset.LastUpdatedAt)
+            .ToList();
+
+        var result = new List<AssetEntity>();
+        var grouped = scored.GroupBy(x => x.Asset.Type).ToList();
+
+        int index = 0;
+        while (result.Count < limit && grouped.Any(g => g.Any()))
+        {
+            bool addedAny = false;
+            foreach (var group in grouped)
+            {
+                var item = group.Skip(index).FirstOrDefault();
+                if (item != null)
+                {
+                    result.Add(item.Asset);
+                    addedAny = true;
+                    if (result.Count >= limit) break;
+                }
+            }
+            index++;
+            if (!addedAny) break;
+        }
+
+        return result;
     }
 
-    /// <inheritdoc />
+    /// <summary>Inherits documentation from interface.</summary>
+    public async Task<List<AssetEntity>> GetAllValidAssetsAsync()
+    {
+        var cutoff = DateTime.UtcNow.AddDays(-90);
+        
+        return await _context.TradeRepublicAssets
+            .AsNoTracking()
+            .Include(a => a.Tags)
+            .Where(a => a.LastUpdatedAt >= cutoff)
+            .ToListAsync();
+    }
+
+    /// <summary>Inherits documentation from interface.</summary>
     public async Task<bool> AddOrUpdateAssetAsync(TradeRepublicAsset dtoAsset)
     {
         var existingEntity = await _context.TradeRepublicAssets
@@ -110,7 +107,20 @@ public class AssetsDbService : IAssetsDbService
             .FirstOrDefaultAsync(a => a.Isin == dtoAsset.Isin);
 
         var now = DateTime.UtcNow;
-        var nextUpdateScheduledAt = await CalculateNextUpdateDateAsync(now);
+
+        var mappedTags = new List<TagEntity>();
+        foreach (var tagDto in dtoAsset.Tags ?? Array.Empty<TradeRepublicTag>())
+        {
+            var existingTag = await _context.TradeRepublicTags.FirstOrDefaultAsync(t => t.Id == tagDto.Id);
+            if (existingTag == null)
+            {
+                _logger.LogTrace("Creating missing asset tag object in storage cache context. ID: {TagId}", tagDto.Id);
+                existingTag = new TagEntity { Id = tagDto.Id, Name = tagDto.Name, Type = tagDto.Type };
+                await _context.TradeRepublicTags.AddAsync(existingTag);
+            }
+
+            mappedTags.Add(existingTag);
+        }
 
         if (existingEntity == null)
         {
@@ -118,53 +128,125 @@ public class AssetsDbService : IAssetsDbService
 
             var newEntity = MapDtoToEntity(dtoAsset);
             newEntity.LastUpdatedAt = now;
-            newEntity.UpdateAt = nextUpdateScheduledAt;
+            newEntity.Tags = mappedTags;
-
-            newEntity.Tags = await MapTagsAsync(dtoAsset.Tags);
 
             await _context.TradeRepublicAssets.AddAsync(newEntity);
             await _context.SaveChangesAsync();
             return true;
         }
 
-        _logger.LogDebug("Asset with ISIN {Isin} exists. Merging properties and updating database record.",
+        _logger.LogDebug("Asset with ISIN {Isin} exists. Merging properties and updating database record.", dtoAsset.Isin);
-            dtoAsset.Isin);
 
         existingEntity.Name = dtoAsset.Name;
         existingEntity.Type = dtoAsset.Type;
         existingEntity.InstrumentCategory = dtoAsset.InstrumentCategory;
         existingEntity.HasCfd = dtoAsset.HasCfd;
         existingEntity.ImageId = dtoAsset.ImageId;
-
         existingEntity.LastUpdatedAt = now;
-        existingEntity.UpdateAt = nextUpdateScheduledAt;
 
         UpdateSubtypeProperties(existingEntity, dtoAsset);
-        existingEntity.Tags = await MapTagsAsync(dtoAsset.Tags);
+        existingEntity.Tags = mappedTags;
 
         _context.TradeRepublicAssets.Update(existingEntity);
         await _context.SaveChangesAsync();
         return true;
     }
 
-    /// <inheritdoc />
+    /// <summary>Inherits documentation from interface.</summary>
     public async Task<int> AddOrUpdateAssetsAsync(IEnumerable<TradeRepublicAsset> dtoAssets)
     {
+        var assetsList = dtoAssets.ToList();
+        if (assetsList.Count == 0) return 0;
+
+        var now = DateTime.UtcNow;
         int changedCount = 0;
 
-        foreach (var dto in dtoAssets)
+        var isins = assetsList.Select(a => a.Isin).Distinct().ToList();
+        var existingAssets = await _context.TradeRepublicAssets
+            .Include(a => a.Tags)
+            .Where(a => isins.Contains(a.Isin))
+            .ToDictionaryAsync(a => a.Isin);
+
+        var tagIds = assetsList
+            .SelectMany(a => a.Tags ?? Array.Empty<TradeRepublicTag>())
+            .Select(t => t.Id)
+            .Distinct()
+            .ToList();
+
+        var tagCache = await _context.TradeRepublicTags
+            .Where(t => tagIds.Contains(t.Id))
+            .ToDictionaryAsync(t => t.Id);
+
+        foreach (var dto in assetsList)
         {
-            var isChanged = await AddOrUpdateAssetAsync(dto);
+            var isChanged = false;
+            var existingEntity = existingAssets.GetValueOrDefault(dto.Isin);
+
+            var mappedTags = new List<TagEntity>();
+            foreach (var tagDto in dto.Tags ?? Array.Empty<TradeRepublicTag>())
+            {
+                if (!tagCache.TryGetValue(tagDto.Id, out var tagEntity))
+                {
+                    _logger.LogTrace("Creating missing asset tag object in storage cache context. ID: {TagId}", tagDto.Id);
+                    tagEntity = new TagEntity { Id = tagDto.Id, Name = tagDto.Name, Type = tagDto.Type };
+                    await _context.TradeRepublicTags.AddAsync(tagEntity);
+                    tagCache.Add(tagDto.Id, tagEntity);
+                }
+                mappedTags.Add(tagEntity);
+            }
+
+            if (existingEntity == null)
+            {
+                _logger.LogDebug("Asset with ISIN {Isin} not found. Mapping and creating a new entity.", dto.Isin);
+
+                var newEntity = MapDtoToEntity(dto);
+                newEntity.LastUpdatedAt = now;
+                newEntity.Tags = mappedTags;
+
+                await _context.TradeRepublicAssets.AddAsync(newEntity);
+                isChanged = true;
+            }
+            else
+            {
+                _logger.LogDebug("Asset with ISIN {Isin} exists. Merging properties and updating database record.", dto.Isin);
+
+                if (existingEntity.Name != dto.Name ||
+                    existingEntity.Type != dto.Type ||
+                    existingEntity.InstrumentCategory != dto.InstrumentCategory ||
+                    existingEntity.HasCfd != dto.HasCfd ||
+                    existingEntity.ImageId != dto.ImageId ||
+                    !existingEntity.Tags.SequenceEqual(mappedTags))
+                {
+                    existingEntity.Name = dto.Name;
+                    existingEntity.Type = dto.Type;
+                    existingEntity.InstrumentCategory = dto.InstrumentCategory;
+                    existingEntity.HasCfd = dto.HasCfd;
+                    existingEntity.ImageId = dto.ImageId;
+                    existingEntity.LastUpdatedAt = now;
+
+                    UpdateSubtypeProperties(existingEntity, dto);
+                    existingEntity.Tags = mappedTags;
+
+                    _context.TradeRepublicAssets.Update(existingEntity);
+                    isChanged = true;
+                }
+            }
+
             if (isChanged)
             {
                 changedCount++;
             }
         }
 
+        if (changedCount > 0)
+        {
+            await _context.SaveChangesAsync();
+        }
+
         return changedCount;
     }
 
-    /// <inheritdoc />
+    /// <summary>Inherits documentation from interface.</summary>
     public async Task<List<AssetEntity>> GetAssetsByIsinAsync(string isin)
     {
         var localAssets = await _context.TradeRepublicAssets
@@ -172,26 +254,30 @@ public class AssetsDbService : IAssetsDbService
             .Where(a => a.Isin == isin)
             .ToListAsync();
 
-        if (localAssets.Any())
+        if (localAssets.Count > 0)
         {
             return localAssets;
         }
 
+        // JIT-Fetch via API
         var trAssetDto = await _tradeRepublicService.GetAsset(isin);
-        if (trAssetDto != null)
+        if (trAssetDto?.Results != null && trAssetDto.Results.Count > 0)
         {
             foreach (var asset in trAssetDto.Results)
             {
-                _ = await AddOrUpdateAssetAsync(asset);
+                await AddOrUpdateAssetAsync(asset);
             }
 
-            return await GetAssetsByIsinAsync(isin);
+            return await _context.TradeRepublicAssets
+                .Include(a => a.Tags)
+                .Where(a => a.Isin == isin)
+                .ToListAsync();
         }
 
         return [];
     }
 
-    /// <inheritdoc />
+    /// <summary>Inherits documentation from interface.</summary>
     public async Task<List<AssetEntity>> GetValidAssetsByIsinAsync(string isin)
     {
         var cutoff = DateTime.UtcNow.AddDays(-14);
@@ -199,23 +285,20 @@ public class AssetsDbService : IAssetsDbService
         return await _context.TradeRepublicAssets
             .AsNoTracking()
             .Include(a => a.Tags)
-            .Where(a => a.Isin == isin && a.UpdateAt >= cutoff)
+            .Where(a => a.Isin == isin && a.LastUpdatedAt >= cutoff)
             .ToListAsync();
     }
 
-    /// <inheritdoc />
+    /// <summary>Inherits documentation from interface.</summary>
     public async Task<List<AssetEntity>> FindAffectedActiveAssetsAsync(string searchQuery)
     {
-        if (string.IsNullOrWhiteSpace(searchQuery))
+        if (string.IsNullOrWhiteSpace(searchQuery)) return [];
-        {
-            return [];
-        }
 
         var cutoff = DateTime.UtcNow.AddDays(-14);
 
-         var searchTerms = searchQuery
+        var searchTerms = searchQuery
             .Split(',')
-            .Select(t => t.Trim().ToLower())
+            .Select(t => t.Trim())
             .Where(t => !string.IsNullOrEmpty(t))
             .Distinct()
             .ToList();
@@ -224,17 +307,17 @@ public class AssetsDbService : IAssetsDbService
 
         var query = _context.TradeRepublicAssets
             .AsNoTracking()
-            .Where(a => a.UpdateAt >= cutoff)
+            .Where(a => a.LastUpdatedAt >= cutoff)
             .Include(a => a.Tags)
             .AsQueryable();
 
-
         foreach (var term in searchTerms)
         {
+            var lowerTerm = term.ToLower();
             query = query.Where(a =>
-                a.Isin.ToLower().Contains(term) ||
+                a.Isin.ToLower().Contains(lowerTerm) ||
-                a.Name.ToLower().Contains(term) ||
+                a.Name.ToLower().Contains(lowerTerm) ||
-                a.Tags.Any(tag => tag.Name.ToLower().Contains(term)));
+                a.Tags.Any(tag => tag.Name.ToLower().Contains(lowerTerm)));
         }
 
         var localAssets = await query.ToListAsync();
@@ -244,12 +327,12 @@ public class AssetsDbService : IAssetsDbService
             .Select(t => t.ToUpper())
             .ToList();
 
-        if (possibleIsins.Any())
+        if (possibleIsins.Count > 0)
         {
             var foundIsins = localAssets.Select(a => a.Isin).ToHashSet();
             var missingIsins = possibleIsins.Where(isin => !foundIsins.Contains(isin)).ToList();
 
-            if (missingIsins.Any())
+            if (missingIsins.Count > 0)
             {
                 var fetchedNewAsset = false;
                 foreach (var missingIsin in missingIsins)
@@ -276,57 +359,42 @@ public class AssetsDbService : IAssetsDbService
         return localAssets;
     }
 
-    /// <inheritdoc />
+    /// <summary>Inherits documentation from interface.</summary>
+    public async Task UpdateAssetImageIdAsync(string isin, string imageId)
+    {
+        var existingAssets = await _context.TradeRepublicAssets
+            .Where(a => a.Isin == isin)
+            .ToListAsync();
+
+        if (existingAssets.Count > 0)
+        {
+            foreach (var asset in existingAssets)
+            {
+                asset.ImageId = imageId;
+            }
+            await _context.SaveChangesAsync();
+            _logger.LogInformation("[{Channel}] Updated ImageId for ISIN {Isin} in database to '{ImageId}'", "AssetsChannel", isin, imageId);
+        }
+    }
+
+    /// <summary>Inherits documentation from interface.</summary>
     public async Task<bool> DeleteAssetAsync(string isin)
     {
         var asset = await _context.TradeRepublicAssets.FirstOrDefaultAsync(a => a.Isin == isin);
         if (asset == null)
         {
-            _logger.LogWarning("Delete execution cancelled. Asset with ISIN {Isin} does not exist.", isin);
+            _logger.LogWarning("[{Channel}] Delete execution cancelled. Asset with ISIN {Isin} does not exist.", "AssetsChannel", isin);
             return false;
         }
 
         _context.TradeRepublicAssets.Remove(asset);
         await _context.SaveChangesAsync();
-        _logger.LogInformation("Asset with ISIN {Isin} has been successfully deleted.", isin);
+        _logger.LogInformation("[{Channel}] Asset with ISIN {Isin} has been successfully deleted.", "AssetsChannel", isin);
         return true;
     }
 
     #region Helper & Mapping Methods
 
-    /// <summary>
-    /// Calculates the next synchronization/update date for an asset using configured parameters and a random offset.
-    /// </summary>
-    /// <param name="baseDate">The baseline date to add the offsets to.</param>
-    /// <returns>A task representing the asynchronous operation, returning a DateTime representing the next scheduled update time (UTC).</returns>
-    private async Task<DateTime> CalculateNextUpdateDateAsync(DateTime baseDate)
-    {
-        var settings = await _context.Set<Settings>().FirstOrDefaultAsync() ?? new Settings();
-
-        int randomDays = _random.Next(settings.MinRandomUpdateDay, settings.MaxRandomUpdateDay + 1);
-        var targetDate = baseDate.AddDays(randomDays);
-
-        int randomHour = _random.Next(settings.UpdateDayTimeStart, settings.UpdateDayTimeStop);
-        int randomMinute = _random.Next(0, 60);
-        int randomSecond = _random.Next(0, 60);
-
-        return new DateTime(
-            targetDate.Year,
-            targetDate.Month,
-            targetDate.Day,
-            randomHour,
-            randomMinute,
-            randomSecond,
-            DateTimeKind.Utc
-        );
-    }
-
-    /// <summary>
-    /// Maps a raw Trade Republic asset data transfer object (DTO) to its matching database entity subtype.
-    /// </summary>
-    /// <param name="dto">The source Trade Republic asset data transfer object.</param>
-    /// <returns>A newly created subtype instance of <see cref="AssetEntity"/> mapped with the DTO properties.</returns>
-    /// <exception cref="NotSupportedException">Thrown when the DTO type is unrecognized or unsupported.</exception>
     private AssetEntity MapDtoToEntity(TradeRepublicAsset dto)
     {
         AssetEntity entity = dto switch
@@ -356,12 +424,6 @@ public class AssetsDbService : IAssetsDbService
         return PopulateBaseProperties(entity, dto);
     }
 
-    /// <summary>
-    /// Populates common base properties of a database asset entity using a Trade Republic DTO.
-    /// </summary>
-    /// <param name="entity">The target database entity.</param>
-    /// <param name="dto">The source Trade Republic DTO.</param>
-    /// <returns>The updated database asset entity.</returns>
     private AssetEntity PopulateBaseProperties(AssetEntity entity, TradeRepublicAsset dto)
     {
         entity.Name = dto.Name;
@@ -372,11 +434,6 @@ public class AssetsDbService : IAssetsDbService
         return entity;
     }
 
-    /// <summary>
-    /// Merges/updates the subtype-specific properties from a Trade Republic DTO into an existing database entity.
-    /// </summary>
-    /// <param name="entity">The existing database entity to update.</param>
-    /// <param name="dto">The source Trade Republic DTO.</param>
     private void UpdateSubtypeProperties(AssetEntity entity, TradeRepublicAsset dto)
     {
         switch (entity)
@@ -409,29 +466,5 @@ public class AssetsDbService : IAssetsDbService
         }
     }
 
-    /// <summary>
-    /// Maps a list of Trade Republic tags to database entity instances, registering new tags in the database context if they do not yet exist.
-    /// </summary>
-    /// <param name="dtos">The read-only collection of Trade Republic tags.</param>
-    /// <returns>A task representing the asynchronous operation, returning the list of mapped database tag entities.</returns>
-    private async Task<List<TagEntity>> MapTagsAsync(IReadOnlyList<TradeRepublicTag> dtos)
-    {
-        var tags = new List<TagEntity>();
-        foreach (var tagDto in dtos)
-        {
-            var existingTag = await _context.TradeRepublicTags.FirstOrDefaultAsync(t => t.Id == tagDto.Id);
-            if (existingTag == null)
-            {
-                _logger.LogTrace("Creating missing asset tag object in storage cache context. ID: {TagId}", tagDto.Id);
-                existingTag = new TagEntity { Id = tagDto.Id, Name = tagDto.Name, Type = tagDto.Type };
-                await _context.TradeRepublicTags.AddAsync(existingTag);
-            }
-
-            tags.Add(existingTag);
-        }
-
-        return tags;
-    }
-
     #endregion
 }

FinlyticAssets/Services/AssetsFullScanService.cs

@@ -1,231 +0,0 @@
-using FinlyticAssets.Models;
-using FinlyticAssets.Models.DataToObject.TradeRepublic;
-using FinlyticCore.Models.Assets;
-
-namespace FinlyticAssets.Services;
-
-/// <summary>
-/// A background service that runs a continuous asset synchronization loop,
-/// scanning Trade Republic to retrieve, update, and index all supported asset types.
-/// </summary>
-public class AssetsFullScanService : BackgroundService
-{
-    private readonly IServiceScopeFactory _serviceScopeFactory;
-    private readonly ILogger<AssetsFullScanService> _logger;
-
-    private AssetsCount? _assetsCount;
-    private AssetsCount? _currAssetsCount;
-
-    /// <summary>
-    /// Initializes a new instance of the <see cref="AssetsFullScanService"/> class.
-    /// </summary>
-    /// <param name="serviceScopeFactory">Factory used to create service scopes for database and API requests.</param>
-    /// <param name="logger">Logger for service lifecycle and scanning progress messages.</param>
-    public AssetsFullScanService(IServiceScopeFactory serviceScopeFactory, ILogger<AssetsFullScanService> logger)
-    {
-        _serviceScopeFactory = serviceScopeFactory;
-        _logger = logger;
-    }
-
-    /// <summary>
-    /// Executes the background scanning task, handling initial startup, recovery, and periodic full-scan cycles.
-    /// </summary>
-    /// <param name="stoppingToken">Triggered when the host is shutting down.</param>
-    /// <returns>A task that represents the background operation.</returns>
-    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
-    {
-        _logger.LogInformation("AssetsFullScanService has started.");
-        
-        try
-        {
-            using (var scope = _serviceScopeFactory.CreateScope())
-            {
-                var indexService = scope.ServiceProvider.GetRequiredService<IAssetsIndexService>();
-                _logger.LogInformation("Building initial asset index on service startup...");
-                await indexService.ReCreateIndexFileAsync(stoppingToken);
-            }
-        }
-        catch (Exception ex)
-        {
-            _logger.LogError(ex, "Failed to build initial asset index on startup. Continuing service execution.");
-        }
-        
-        do
-        {
-            try
-            {
-                using (var scope = _serviceScopeFactory.CreateScope())
-                {
-                    var tradeRepublicService = scope.ServiceProvider.GetRequiredService<ITradeRepublicService>();
-                    var settingsService = scope.ServiceProvider.GetRequiredService<ISettingsDbService>();
-                    var assetsDbService = scope.ServiceProvider.GetRequiredService<IAssetsDbService>();
-                    var indexService = scope.ServiceProvider.GetRequiredService<IAssetsIndexService>();
-                    
-                    _logger.LogInformation("Requesting total asset counts from Trade Republic...");
-                    _assetsCount = await tradeRepublicService.GetAssetsCount(stoppingToken);
-                    _currAssetsCount = new AssetsCount();
-                    
-                    var initSettings = await settingsService.GetSettings();
-                    var isRecoveryMode = initSettings.CurrentScanningPage > 0;
-
-                    foreach (var type in Enum.GetValues<AssetType>())
-                    {
-                        if (stoppingToken.IsCancellationRequested) break;
-
-                        if (isRecoveryMode)
-                        {
-                            if (type != initSettings.CurrentScanningType)
-                            {
-                                _logger.LogInformation("Recovery: {AssetType} was already processed. Skipping.", type);
-                                continue;
-                            }
-                            isRecoveryMode = false;
-                        }
-                        else
-                        {
-                            var settings = await settingsService.GetSettings();
-                            settings.CurrentScanningType = type;
-                            settings.CurrentScanningPage = 0;
-                            await settingsService.SaveSettings(settings);
-                        }
-
-                        _logger.LogInformation("Processing asset type: {AssetType}...", type);
-                        await HandleAssetType(type, tradeRepublicService, settingsService, assetsDbService, indexService, stoppingToken);
-
-                        var currentSettings = await settingsService.GetSettings();
-                        var delaySeconds = currentSettings.FinishedInitialScan 
-                            ? currentSettings.AssetUpdateTypeDelay 
-                            : currentSettings.InitAssetUpdateTypeDelay;
-
-                        var jitter = Random.Shared.Next(0, 480);
-                        _logger.LogDebug("Waiting {Delay} seconds before the next asset type.", delaySeconds + jitter);
-                        await Task.Delay(TimeSpan.FromSeconds(delaySeconds + jitter), stoppingToken);
-                    }
-
-                    var finalSettings = await settingsService.GetSettings();
-                    finalSettings.CurrentScanningPage = 0;
-                    
-                    if (!finalSettings.FinishedInitialScan && !stoppingToken.IsCancellationRequested)
-                    {
-                        _logger.LogInformation("Initial scan successfully completed. Switching FinishedInitialScan to true.");
-                        finalSettings.FinishedInitialScan = true;
-                    }
-                    
-                    await settingsService.SaveSettings(finalSettings);
-                }
-                
-                _logger.LogInformation("Full scan cycle completed. Waiting 1 minute before starting the next cycle.");
-                await Task.Delay(TimeSpan.FromMinutes(1), stoppingToken);
-            }
-            catch (Exception e)
-            {
-                _logger.LogError(e, "An unhandled exception occurred in AssetsFullScanService. Retrying in 10 seconds.");
-                try { await Task.Delay(TimeSpan.FromSeconds(10), stoppingToken); } catch { /* Ignore */ }
-            }
-        } while (!stoppingToken.IsCancellationRequested);
-
-        _logger.LogInformation("AssetsFullScanService is stopping.");
-    }
-
-    /// <summary>
-    /// Handles the scanning process for a specific asset type, iterating through its paginated results.
-    /// </summary>
-    /// <param name="type">The type of assets to process (e.g., Stock, Crypto).</param>
-    /// <param name="tradeRepublicService">Service to fetch asset data from Trade Republic.</param>
-    /// <param name="settingsDbService">Service to read and write application state/settings.</param>
-    /// <param name="assetsDbService">Service to insert or update assets in the database.</param>
-    /// <param name="indexService">Service to recreate the local index file if needed.</param>
-    /// <param name="stoppingToken">Cancellation token monitored for cancellation requests.</param>
-    /// <returns>A task representing the asynchronous operation.</returns>
-    private async Task HandleAssetType(AssetType type, ITradeRepublicService tradeRepublicService,
-        ISettingsDbService settingsDbService, IAssetsDbService assetsDbService, IAssetsIndexService indexService, CancellationToken stoppingToken)
-    {
-        var totalCount = _assetsCount?.GetCountFromType(type) ?? 0;
-        if (totalCount == 0)
-        {
-            _logger.LogWarning("No assets found for type {AssetType}.", type);
-            return;
-        }
-
-        _currAssetsCount ??= new AssetsCount();
-        var currentItemOffset = 0;
-
-        var settings = await settingsDbService.GetSettings();
-        if (settings.CurrentScanningType == type && settings.CurrentScanningPage > 0)
-        {
-            var pageSize = settings.TradeRepublicMaxRequestPageSize <= 0 ? 50 : settings.TradeRepublicMaxRequestPageSize;
-            if (pageSize > 100) pageSize = 100;
-
-            currentItemOffset = (settings.CurrentScanningPage - 1) * pageSize;
-            _logger.LogInformation("Resuming full scan for {AssetType} from Page {Page} (Offset: {Offset}).", 
-                type, settings.CurrentScanningPage, currentItemOffset);
-        }
-
-        while (currentItemOffset < totalCount && !stoppingToken.IsCancellationRequested)
-        {
-            var currentSettings = await settingsDbService.GetSettings();
-            var pageSize = currentSettings.TradeRepublicMaxRequestPageSize;
-            if (pageSize <= 0 || pageSize > 100) pageSize = 100;
-
-            var currentPage = (currentItemOffset / pageSize) + 1;
-
-            currentSettings.CurrentScanningType = type;
-            currentSettings.CurrentScanningPage = currentPage;
-            await settingsDbService.SaveSettings(currentSettings);
-
-            _logger.LogDebug("Fetching {AssetType} - Page {Page} (Size: {PageSize}). Offset: {Offset}/{Total}",
-                type, currentPage, pageSize, currentItemOffset, totalCount);
-
-            var assets = await tradeRepublicService.GetAssets(type, currentPage, pageSize, stoppingToken);
-
-            if (assets?.Results == null || assets.Results.Count == 0)
-            {
-                _logger.LogWarning("Fetch for {AssetType} (Page {Page}) returned no results. Retrying in 5 seconds...", type, currentPage);
-                await Task.Delay(TimeSpan.FromSeconds(5), stoppingToken);
-                continue;
-            }
-
-            await ProcessAssets(assets.Results, assetsDbService, indexService,stoppingToken);
-            _currAssetsCount.SetCountOfType(type, _currAssetsCount.GetCountFromType(type) + assets.Results.Count);
-
-            currentItemOffset = currentPage * pageSize;
-
-            if (assets.Results.Count < pageSize)
-            {
-                _logger.LogInformation("Reached the last page for {AssetType}.", type);
-                break;
-            }
-
-            var delaySeconds = currentSettings.FinishedInitialScan
-                ? currentSettings.BatchAssetUpdateDelay
-                : currentSettings.InitBatchAssetUpdateDelay;
-
-            var jitter = Random.Shared.Next(0, 360);
-            _logger.LogDebug("Waiting {Delay} seconds before the next batch.", delaySeconds + jitter);
-            await Task.Delay(TimeSpan.FromSeconds(delaySeconds + jitter), stoppingToken);
-        }
-    }
-
-    /// <summary>
-    /// Processes a list of fetched Trade Republic assets, updates them in the database,
-    /// and triggers an index recreation if changes were detected.
-    /// </summary>
-    /// <param name="assets">The list of Trade Republic assets to process.</param>
-    /// <param name="assetsDbService">Service to insert or update assets in the database.</param>
-    /// <param name="indexService">Service to recreate the local index file.</param>
-    /// <param name="stoppingToken">Cancellation token monitored for cancellation requests.</param>
-    /// <returns>A task representing the asynchronous operation.</returns>
-    private async Task ProcessAssets(IList<TradeRepublicAsset> assets, IAssetsDbService assetsDbService, IAssetsIndexService indexService, CancellationToken stoppingToken)
-    {
-        if (assets == null || assets.Count == 0) return;
-
-        var changedRows = await assetsDbService.AddOrUpdateAssetsAsync(assets);
-        _logger.LogInformation("[Scan] {Count} assets passed to the DB service. {Changed} modifications/inserts executed.", assets.Count, changedRows);
-        
-        if (changedRows > 0)
-        {
-            _logger.LogInformation("Database modifications detected. Recreating the asset index file...");
-            await indexService.ReCreateIndexFileAsync(stoppingToken);
-        }
-    }
-}

FinlyticAssets/Services/AssetsIndexService.cs

@@ -6,7 +6,7 @@ using FinlyticAssets.Util;
 namespace FinlyticAssets.Services;
 
 /// <summary>
-/// Provides methods for generating and maintaining the indexed asset reference file used for pre-filtering.
+/// Provides methods for generating the indexed asset reference file and downloading local asset logos strictly on demand.
 /// </summary>
 public interface IAssetsIndexService
 {
@@ -15,16 +15,22 @@ public interface IAssetsIndexService
     /// </summary>
     /// <param name="cancellationToken">A token to monitor for cancellation requests.</param>
     /// <returns>A task that represents the asynchronous operation.</returns>
-    public Task ReCreateIndexFileAsync(CancellationToken cancellationToken);
+    public Task ReCreateIndexFileAsync(CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// Strictly On Demand: Downloads and saves the logo SVG for a requested ISIN into the local assets/logos folder.
+    /// </summary>
+    public Task<string?> DownloadAndSaveLogoAsync(string isin, CancellationToken cancellationToken = default);
 }
 
 /// <summary>
-/// Implements the <see cref="IAssetsIndexService"/> to maintain local asset index references.
+/// Implements the <see cref="IAssetsIndexService"/> to maintain local asset index references and logo file storage.
 /// </summary>
 public class AssetsIndexService : IAssetsIndexService
 {
     private readonly ILogger<AssetsIndexService> _logger;
     private readonly IAssetsDbService _assetsDbService;
+    private static readonly HttpClient _httpClient = new();
 
     /// <summary>
     /// Initializes a new instance of the <see cref="AssetsIndexService"/> class.
@@ -37,19 +43,26 @@ public class AssetsIndexService : IAssetsIndexService
         _assetsDbService = assetsDbService;
     }
 
-    /// <inheritdoc />
+    /// <summary>Inherits documentation from interface.</summary>
-    public async Task ReCreateIndexFileAsync(CancellationToken cancellationToken)
+    public async Task ReCreateIndexFileAsync(CancellationToken cancellationToken = default)
     {
         try
         {
             var assets = await _assetsDbService.GetAllValidAssetsAsync();
             if (assets == null || !assets.Any())
             {
-                _logger.LogWarning("No valid assets found in the database to index.");
+                _logger.LogWarning("[{Channel}] No valid assets found in the database to index.", "AssetsChannel");
                 return;
             }
 
-            var indexAssets = assets.Select(a => new AssetIndex(a.Isin, a.Name)).ToList();
+            var indexAssets = assets
+                .DistinctBy(a => a.Isin)
+                .Select(a => {
+                    string cleanIsin = a.Isin.Trim().ToUpperInvariant();
+                    // Point directly to our own local backend logo endpoint
+                    string imageUrl = $"/api/v1/logo/{cleanIsin}";
+                    return new AssetIndex(cleanIsin, a.Name, imageUrl);
+                }).ToList();
 
             var directoryPath = Volumes.IndexRelativePath;
             var filePath = Path.Combine(directoryPath, "index.json");
@@ -65,23 +78,68 @@ public class AssetsIndexService : IAssetsIndexService
                 await JsonSerializer.SerializeAsync(fileStream, indexAssets, cancellationToken: cancellationToken);
             }
 
-            _logger.LogInformation("Successfully recreated asset index file with {Count} entries at {Path}",
+            _logger.LogInformation("[{Channel}] Successfully recreated asset index file with {Count} entries pointing to local logos at {Path}",
-                indexAssets.Count, filePath);
+                "AssetsChannel", indexAssets.Count, filePath);
         }
         catch (IOException ex)
         {
-            _logger.LogError(ex, "Disk I/O error occurred while writing the asset index file.");
+            _logger.LogError(ex, "[{Channel}] Disk I/O error occurred while writing the asset index file.", "AssetsChannel");
             throw;
         }
         catch (JsonException ex)
         {
-            _logger.LogError(ex, "Failed to serialize the asset index data to JSON.");
+            _logger.LogError(ex, "[{Channel}] Failed to serialize the asset index data to JSON.", "AssetsChannel");
             throw;
         }
         catch (Exception ex)
         {
-            _logger.LogError(ex, "An unexpected error occurred while recreating the asset index file.");
+            _logger.LogError(ex, "[{Channel}] An unexpected error occurred while recreating the asset index file.", "AssetsChannel");
             throw;
         }
     }
+
+    /// <summary>Inherits documentation from interface.</summary>
+    public async Task<string?> DownloadAndSaveLogoAsync(string isin, CancellationToken cancellationToken = default)
+    {
+        if (string.IsNullOrWhiteSpace(isin)) return null;
+
+        string cleanIsin = isin.Trim().ToUpperInvariant();
+        string directoryPath = Volumes.LogosRelativePath;
+        string filePath = Path.Combine(directoryPath, $"{cleanIsin}.svg");
+
+        if (!Directory.Exists(directoryPath))
+        {
+            Directory.CreateDirectory(directoryPath);
+        }
+
+        if (File.Exists(filePath))
+        {
+            return filePath;
+        }
+
+        string targetUrl = $"https://assets.traderepublic.com/img/logos/{cleanIsin}/v2/dark.min.svg";
+
+        try
+        {
+            using var request = new HttpRequestMessage(HttpMethod.Get, targetUrl);
+            request.Headers.TryAddWithoutValidation("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36");
+            request.Headers.TryAddWithoutValidation("Accept", "image/svg+xml,image/*,*/*");
+            request.Headers.TryAddWithoutValidation("Referer", "https://traderepublic.com/");
+
+            using var response = await _httpClient.SendAsync(request, cancellationToken);
+            if (response.IsSuccessStatusCode)
+            {
+                byte[] data = await response.Content.ReadAsByteArrayAsync(cancellationToken);
+                await File.WriteAllBytesAsync(filePath, data, cancellationToken);
+                _logger.LogInformation("[{Channel}] Successfully saved logo SVG for ISIN {Isin} to {Path} on demand", "AssetsChannel", cleanIsin, filePath);
+                return filePath;
+            }
+        }
+        catch (Exception ex)
+        {
+            _logger.LogWarning(ex, "[{Channel}] Failed to download logo for ISIN {Isin} from {Url}", "AssetsChannel", cleanIsin, targetUrl);
+        }
+
+        return null;
+    }
 }

FinlyticAssets/Services/LogoFetcherBackgroundService.cs

@@ -0,0 +1,171 @@
+using System;
+using System.IO;
+using System.Linq;
+using System.Net.Http;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using FinlyticAssets.Util;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+
+namespace FinlyticAssets.Services;
+
+/// <summary>
+/// Dedicated background service that periodically scans for missing asset logos in the local storage directory
+/// and fetches them in batches from Trade Republic CDN.
+/// Swaps missing/404 logos with a clean SVG placeholder image and triggers ReCreateIndexFileAsync.
+/// </summary>
+public class LogoFetcherBackgroundService : BackgroundService
+{
+    private readonly ILogger<LogoFetcherBackgroundService> _logger;
+    private readonly IServiceScopeFactory _scopeFactory;
+    private readonly HttpClient _httpClient;
+
+    private const string PlaceholderSvg = """
+        <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" width="100" height="100">
+          <rect width="100" height="100" rx="30" fill="#1E293B"/>
+          <path d="M 30 65 L 45 45 L 60 55 L 75 35" fill="none" stroke="#10B981" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
+          <circle cx="75" cy="35" r="5" fill="#06B6D4"/>
+        </svg>
+        """;
+
+    public LogoFetcherBackgroundService(
+        ILogger<LogoFetcherBackgroundService> logger,
+        IServiceScopeFactory scopeFactory)
+    {
+        _logger = logger;
+        _scopeFactory = scopeFactory;
+        _httpClient = new HttpClient();
+        _httpClient.DefaultRequestHeaders.TryAddWithoutValidation("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36");
+        _httpClient.DefaultRequestHeaders.TryAddWithoutValidation("Accept", "image/svg+xml,image/*,*/*");
+        _httpClient.DefaultRequestHeaders.TryAddWithoutValidation("Referer", "https://traderepublic.com/");
+    }
+
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        _logger.LogInformation("[{Channel}] LogoFetcherBackgroundService started. Will fetch missing logos periodically.", "AssetsChannel");
+
+        await Task.Delay(TimeSpan.FromSeconds(10), stoppingToken);
+
+        while (!stoppingToken.IsCancellationRequested)
+        {
+            try
+            {
+                await ProcessMissingLogosBatchAsync(stoppingToken);
+            }
+            catch (Exception ex) when (!stoppingToken.IsCancellationRequested)
+            {
+                _logger.LogError(ex, "[{Channel}] Error occurred while executing logo batch fetch.", "AssetsChannel");
+            }
+
+            try
+            {
+                await Task.Delay(TimeSpan.FromMinutes(1), stoppingToken);
+            }
+            catch (OperationCanceledException)
+            {
+                break;
+            }
+        }
+
+        _logger.LogInformation("[{Channel}] LogoFetcherBackgroundService stopped.", "AssetsChannel");
+    }
+
+    private async Task ProcessMissingLogosBatchAsync(CancellationToken stoppingToken)
+    {
+        using var scope = _scopeFactory.CreateScope();
+        var dbService = scope.ServiceProvider.GetRequiredService<IAssetsDbService>();
+        var indexService = scope.ServiceProvider.GetRequiredService<IAssetsIndexService>();
+
+        var validAssets = await dbService.GetAllValidAssetsAsync();
+        if (validAssets == null || !validAssets.Any()) return;
+
+        string directoryPath = Volumes.LogosRelativePath;
+        if (!Directory.Exists(directoryPath))
+        {
+            Directory.CreateDirectory(directoryPath);
+        }
+
+        // ✅ Prüft sowohl DB-Eintrag ALS AUCH, ob die Datei bereits lokal existiert
+        var missingIsins = validAssets
+            .Select(a => a.Isin?.Trim().ToUpperInvariant())
+            .Where(isin => !string.IsNullOrEmpty(isin))
+            .Distinct()
+            .Where(isin => !File.Exists(Path.Combine(directoryPath, $"{isin}.svg")))
+            .ToList();
+
+        if (missingIsins.Count == 0)
+        {
+            _logger.LogDebug("All asset logos are downloaded and up to date.");
+            return;
+        }
+
+        var batchToFetch = missingIsins.Take(60).ToList();
+        _logger.LogInformation("[{Channel}] Found {Count} missing logos on disk. Fetching bulk batch of {BatchSize} logos...", "AssetsChannel", missingIsins.Count, batchToFetch.Count);
+
+        int successCount = 0;
+
+        foreach (var isin in batchToFetch)
+        {
+            if (stoppingToken.IsCancellationRequested) break;
+
+            string targetUrl = $"https://assets.traderepublic.com/img/logos/{isin}/v2/dark.min.svg";
+            string filePath = Path.Combine(directoryPath, $"{isin}.svg");
+            string dbImageEndpoint = $"/api/v1/logo/{isin}";
+
+            try
+            {
+                using var response = await _httpClient.GetAsync(targetUrl, stoppingToken);
+                if (response.IsSuccessStatusCode)
+                {
+                    byte[] data = await response.Content.ReadAsByteArrayAsync(stoppingToken);
+                    await File.WriteAllBytesAsync(filePath, data, stoppingToken);
+                    successCount++;
+                }
+                else
+                {
+                    _logger.LogWarning("[{Channel}] Logo not found on CDN for ISIN {Isin} (HTTP {StatusCode}). Saving SVG placeholder.", "AssetsChannel", isin, response.StatusCode);
+                    byte[] placeholderData = Encoding.UTF8.GetBytes(PlaceholderSvg);
+                    await File.WriteAllBytesAsync(filePath, placeholderData, stoppingToken);
+                    successCount++;
+                }
+
+                await dbService.UpdateAssetImageIdAsync(isin, dbImageEndpoint);
+            }
+            catch (Exception ex) when (!stoppingToken.IsCancellationRequested)
+            {
+                _logger.LogWarning(ex, "[{Channel}] Exception while downloading logo for ISIN {Isin} from {Url}. Saving SVG placeholder.", "AssetsChannel", isin, targetUrl);
+                try
+                {
+                    byte[] placeholderData = Encoding.UTF8.GetBytes(PlaceholderSvg);
+                    await File.WriteAllBytesAsync(filePath, placeholderData, stoppingToken);
+                    successCount++;
+
+                    await dbService.UpdateAssetImageIdAsync(isin, dbImageEndpoint);
+                }
+                catch { }
+            }
+
+            // Kurze Pause gegen Rate Limiting
+            await Task.Delay(50, stoppingToken);
+        }
+
+        _logger.LogInformation("[{Channel}] Batch fetch complete. Successfully processed {SuccessCount}/{BatchSize} logos. Remaining missing: {Remaining}",
+            "AssetsChannel", successCount, batchToFetch.Count, missingIsins.Count - batchToFetch.Count);
+
+        if (successCount > 0)
+        {
+            try
+            {
+                await indexService.ReCreateIndexFileAsync(stoppingToken);
+                _logger.LogInformation("[{Channel}] Successfully updated index.json after logo batch fetch.", "AssetsChannel");
+            }
+            catch (Exception ex)
+            {
+                _logger.LogWarning(ex, "[{Channel}] Failed to update index.json after logo batch fetch.", "AssetsChannel");
+            }
+        }
+    }
+}

FinlyticAssets/Services/MqttConnectionService.cs

@@ -1,52 +0,0 @@
-using FinlyticAssets.Util;
-using FinlyticCore.Models;
-
-namespace FinlyticAssets.Services;
-
-/// <summary>
-/// A hosted service responsible for managing the lifecycle of the MQTT client connection
-/// when the application starts up and shuts down.
-/// </summary>
-public class MqttConnectionService : IHostedService
-{
-    private readonly AssetsMqttClient _mqttClient;
-    private readonly IConfiguration _configuration;
-
-    /// <summary>
-    /// Initializes a new instance of the <see cref="MqttConnectionService"/> class.
-    /// </summary>
-    /// <param name="mqttClient">The MQTT client wrapper instance.</param>
-    /// <param name="configuration">The application configuration provider.</param>
-    public MqttConnectionService(AssetsMqttClient mqttClient, IConfiguration configuration)
-    {
-        _mqttClient = mqttClient;
-        _configuration = configuration;
-    }
-
-    /// <summary>
-    /// Starts the MQTT client connection using settings resolved from configuration.
-    /// </summary>
-    /// <param name="cancellationToken">A token to monitor for cancellation requests.</param>
-    /// <returns>A task representing the asynchronous start operation.</returns>
-    public async Task StartAsync(CancellationToken cancellationToken)
-    {
-        var config = new MqttConfiguration()
-        {
-            Host = _configuration["MQTT__Host"]!,
-            Port = Convert.ToInt32(_configuration["MQTT__Port"]!),
-            ClientId = $"{_configuration["MQTT__ClientId"]!}_{Guid.NewGuid()}"
-        };
-
-        await _mqttClient.ConnectAsync(config);
-    }
-
-    /// <summary>
-    /// Stops and disconnects the MQTT client connection.
-    /// </summary>
-    /// <param name="cancellationToken">A token to monitor for cancellation requests.</param>
-    /// <returns>A task representing the asynchronous stop operation.</returns>
-    public async Task StopAsync(CancellationToken cancellationToken)
-    {
-        await _mqttClient.DisconnectAsync();
-    }
-}

FinlyticAssets/Services/SettingsDbService.cs

@@ -1,4 +1,4 @@
-using FinlyticAssets.Database;
+using FinlyticAssets.Database;
 using FinlyticAssets.Entities;
 using Microsoft.EntityFrameworkCore;
 
@@ -28,6 +28,11 @@ public interface ISettingsDbService
     /// and tracked <see cref="Settings"/> instance.
     /// </returns>
     public Task<Settings> SaveSettings(Settings settings);
+
+    /// <summary>
+    /// Updates settings from a key-value dictionary received via Admin Panel MQTT events.
+    /// </summary>
+    public Task UpdateSettingsFromDictionary(Dictionary<string, string> dictionary);
 }
 
 /// <summary>
@@ -47,25 +52,23 @@ public class SettingsDbService : ISettingsDbService
         _context = context;
     }
 
-    /// <inheritdoc />
+    /// <summary>Inherits documentation from interface.</summary>
     public async Task<Settings> GetSettings()
     {
         var settings = await _context.Settings.AsNoTracking().FirstOrDefaultAsync();
 
         if (settings == null)
         {
-            settings = new Settings
+            settings = new Settings { Id = Guid.NewGuid() };
-            {
+            _context.Settings.Add(settings);
-                Id = Guid.NewGuid()
+            await _context.SaveChangesAsync();
-            };
+            _context.ChangeTracker.Clear();
-            
-            await SaveSettings(settings);
         }
         
         return settings;
     }
 
-    /// <inheritdoc />
+    /// <summary>Inherits documentation from interface.</summary>
     public async Task<Settings> SaveSettings(Settings settings)
     {
         var existing = await _context.Settings.FirstOrDefaultAsync();
@@ -76,16 +79,47 @@ public class SettingsDbService : ISettingsDbService
             {
                 settings.Id = Guid.NewGuid();
             }
-            await _context.Settings.AddAsync(settings);
+            _context.Settings.Add(settings);
             await _context.SaveChangesAsync();
             return settings;
         }
         else
         {
-            _context.Entry(existing).CurrentValues.SetValues(settings);
+            existing.FinishedInitialScan = settings.FinishedInitialScan;
-        
+            existing.TradeRepublicMaxRequestPageSize = settings.TradeRepublicMaxRequestPageSize;
+            existing.AssetUpdateTypeDelay = settings.AssetUpdateTypeDelay;
+            existing.InitAssetUpdateTypeDelay = settings.InitAssetUpdateTypeDelay;
+            existing.InitBatchAssetUpdateDelay = settings.InitBatchAssetUpdateDelay;
+            existing.BatchAssetUpdateDelay = settings.BatchAssetUpdateDelay;
+            existing.CurrentScanningType = settings.CurrentScanningType;
+            existing.CurrentScanningPage = settings.CurrentScanningPage;
+            _context.Settings.Update(existing);
             await _context.SaveChangesAsync();
             return existing;
         }
     }
+
+    /// <summary>Inherits documentation from interface.</summary>
+    public async Task UpdateSettingsFromDictionary(Dictionary<string, string> dictionary)
+    {
+        var settings = await GetSettings();
+
+        foreach (var (key, value) in dictionary)
+        {
+            if (string.Equals(key, "TradeRepublicMaxRequestPageSize", StringComparison.OrdinalIgnoreCase) && int.TryParse(value, out var ps))
+                settings.TradeRepublicMaxRequestPageSize = ps;
+            else if (string.Equals(key, "AssetUpdateTypeDelay", StringComparison.OrdinalIgnoreCase) && int.TryParse(value, out var autd))
+                settings.AssetUpdateTypeDelay = autd;
+            else if (string.Equals(key, "InitAssetUpdateTypeDelay", StringComparison.OrdinalIgnoreCase) && int.TryParse(value, out var iautd))
+                settings.InitAssetUpdateTypeDelay = iautd;
+            else if (string.Equals(key, "BatchAssetUpdateDelay", StringComparison.OrdinalIgnoreCase) && int.TryParse(value, out var baud))
+                settings.BatchAssetUpdateDelay = baud;
+            else if (string.Equals(key, "InitBatchAssetUpdateDelay", StringComparison.OrdinalIgnoreCase) && int.TryParse(value, out var ibaud))
+                settings.InitBatchAssetUpdateDelay = ibaud;
+            else if (string.Equals(key, "FinishedInitialScan", StringComparison.OrdinalIgnoreCase) && bool.TryParse(value, out var fis))
+                settings.FinishedInitialScan = fis;
+        }
+
+        await SaveSettings(settings);
+    }
 }

FinlyticAssets/Services/TradeRepublicService.cs

@@ -1,240 +0,0 @@
-using System.Timers;
-using FinlyticAssets.Models;
-using FinlyticAssets.Models.DataToObject.TradeRepublic;
-using FinlyticAssets.Util;
-using FinlyticCore.Models.Assets;
-
-namespace FinlyticAssets.Services;
-
-public interface ITradeRepublicService
-{
-    /// <summary>
-    /// Holt die Anzahl der Assets pro Typ für die Paginierung des Initial-Scans.
-    /// </summary>
-    public Task<AssetsCount> GetAssetsCount(CancellationToken cancellationToken = default);
-
-    /// <summary>
-    /// Holt eine spezifische Seite an Assets für den Initial-Scan.
-    /// </summary>
-    public Task<TradeRepublicAssetResponse?> GetAssets(AssetType type, int page, int pageSize,
-        CancellationToken cancellationToken = default);
-
-    /// <summary>
-    /// Holt die aktuellen Stammdaten für eine spezifische ISIN (Gezieltes Update).
-    /// Gibt null zurück, wenn das Asset bei TR nicht mehr existiert.
-    /// </summary>
-    public Task<TradeRepublicAssetResponse?> GetAsset(string isin, CancellationToken cancellationToken = default);
-}
-
-/// <summary>
-/// Provides a managed service to interact with the Trade Republic API via WebSockets,
-/// featuring an automatic inactivity timeout to mimic human behavior.
-/// </summary>
-public class TradeRepublicService : ITradeRepublicService, IDisposable
-{
-    private readonly TradeRepublicClient _client;
-    private readonly ILogger<TradeRepublicService> _logger;
-    private readonly System.Timers.Timer _inactivityTimer;
-    private readonly SemaphoreSlim _lock = new(1, 1);
-
-    /// <summary>
-    /// Initializes a new instance of the <see cref="TradeRepublicService"/> class.
-    /// </summary>
-    /// <param name="client">The underlying managed WebSocket client.</param>
-    /// <param name="logger">The logger instance.</param>
-    public TradeRepublicService(TradeRepublicClient client, ILogger<TradeRepublicService> logger)
-    {
-        _client = client;
-        _logger = logger;
-
-        _inactivityTimer = new System.Timers.Timer(TimeSpan.FromSeconds(461).TotalMilliseconds);
-        _inactivityTimer.AutoReset = false;
-        _inactivityTimer.Elapsed += OnInactivityTimeout;
-    }
-
-    /// <summary>
-    /// Ensures that the Trade Republic WebSocket client is connected, initiating a new connection if necessary.
-    /// Also handles resetting the inactivity timer.
-    /// </summary>
-    /// <returns>A task representing the asynchronous operation.</returns>
-    private async Task EnsureConnectedAsync()
-    {
-        await _lock.WaitAsync();
-        try
-        {
-            _inactivityTimer.Stop();
-
-            if (!_client.IsConnected)
-            {
-                _logger.LogInformation("Trade Republic API is not connected. Establishing automated connection...");
-            
-                // Nutzt den boolschen Rückgabewert von InitAsync
-                bool connected = await _client.InitAsync();
-            
-                if (connected)
-                {
-                    _logger.LogInformation("Successfully connected to Trade Republic API.");
-                }
-                else
-                {
-                    _logger.LogWarning("Trade Republic API connection initialization failed (InitAsync returned false).");
-                }
-            }
-
-            _inactivityTimer.Start();
-        }
-        catch (Exception ex)
-        {
-            _logger.LogError(ex, "Failed to establish a connection to the Trade Republic API.");
-            throw;
-        }
-        finally
-        {
-            _lock.Release();
-        }
-    }
-
-    /// <summary>
-    /// Retrieves the total count of available assets grouped by their types.
-    /// </summary>
-    /// <param name="cancellationToken">A token to monitor for cancellation requests.</param>
-    /// <returns>An <see cref="AssetsCount"/> object containing the metrics.</returns>
-    public async Task<AssetsCount> GetAssetsCount(CancellationToken cancellationToken = default)
-    {
-        await EnsureConnectedAsync();
-
-        var counts = new AssetsCount();
-
-        foreach (var type in Enum.GetValues<AssetType>())
-        {
-            var reqData = new TradeRepublicSearchData()
-            {
-                Query = "",
-                Page = 1,
-                PageSize = 1,
-                Filter =
-                [
-                    new TradeRepublicFilter("type", type.ToString().ToLowerInvariant()),
-                    new TradeRepublicFilter("jurisdiction", "DE"),
-                ]
-            };
-            
-            
-
-            var request = new TradeRepublicSearchRequest(Data: reqData);
-            var response =
-                await _client.SendRequestAsync<TradeRepublicAssetResponse, TradeRepublicSearchRequest>(request);
-
-            var count = response?.ResultCount ?? 0;
-
-            counts.SetCountOfType(type, count);
-            
-            await Task.Delay(TimeSpan.FromMilliseconds(320), cancellationToken);
-        }
-
-        return counts;
-    }
-
-    /// <summary>
-    /// Retrieves a paginated chunk of assets filtered by a specific type.
-    /// </summary>
-    /// <param name="type">The type of assets to retrieve (e.g., Stock, Etf).</param>
-    /// <param name="page">The zero-based page index.</param>
-    /// <param name="pageSize">The number of elements per page.</param>
-    /// <param name="cancellationToken">A token to monitor for cancellation requests.</param>
-    /// <returns>A <see cref="TradeRepublicAssetResponse"/> containing the elements, or null if the request fails.</returns>
-    public async Task<TradeRepublicAssetResponse?> GetAssets(AssetType type, int page, int pageSize,
-        CancellationToken cancellationToken = default)
-    {
-        await EnsureConnectedAsync();
-
-        var reqData = new TradeRepublicSearchData()
-        {
-            Query = "",
-            Page = page,
-            PageSize = pageSize,
-            Filter =
-            [
-                new TradeRepublicFilter("type", type.ToString().ToLowerInvariant()),
-                new TradeRepublicFilter("jurisdiction", "DE"),
-            ]
-        };
-
-        var request = new TradeRepublicSearchRequest(Data: reqData);
-
-        return await _client.SendRequestAsync<TradeRepublicAssetResponse, TradeRepublicSearchRequest>(request);
-    }
-
-    /// <summary>
-    /// Retrieves the static metadata for a single specific asset via its ISIN.
-    /// </summary>
-    /// <param name="isin">The International Securities Identification Number of the target asset.</param>
-    /// <param name="cancellationToken">A token to monitor for cancellation requests.</param>
-    /// <returns>A <see cref="TradeRepublicAssetResponse"/> containing instrument details, or null if the asset is not found.</returns>
-    public async Task<TradeRepublicAssetResponse?> GetAsset(string isin, CancellationToken cancellationToken = default)
-    {
-        try
-        {
-            await EnsureConnectedAsync();
-
-
-            var reqData = new TradeRepublicSearchData()
-            {
-                Query = isin,
-                Page = 1,
-                PageSize = 1,
-                Filter =
-                [
-                    new TradeRepublicFilter("jurisdiction", "DE"),
-                ]
-            };
-
-            var request = new TradeRepublicSearchRequest(Data: reqData);
-
-            return await _client.SendRequestAsync<TradeRepublicAssetResponse, TradeRepublicSearchRequest>(request);
-        }
-        catch (Exception ex)
-        {
-            _logger.LogError(ex, "Error while fetching asset metadata for ISIN {Isin}", isin);
-            return null;
-        }
-    }
-
-    /// <summary>
-    /// Event handler executed when the inactivity timer expires.
-    /// Gracefully disconnects the WebSocket client.
-    /// </summary>
-    /// <param name="sender">The source of the event.</param>
-    /// <param name="e">An EventData object that contains the event data.</param>
-    private async void OnInactivityTimeout(object? sender, ElapsedEventArgs e)
-    {
-        try
-        {
-            await _lock.WaitAsync();
-
-            if (!_client.IsConnected) return;
-
-            _logger.LogInformation("No active requests detected for 5 minutes. Automatically disconnecting WebSocket.");
-            await _client.DisconnectAsync();
-        }
-        catch (Exception ex)
-        {
-            _logger.LogError(ex, "Error during automatic inactivity disconnect procedure.");
-            //ignore
-        }
-        finally
-        {
-            _lock.Release();
-        }
-    }
-
-    /// <summary>
-    /// Disposes the underlying timer and synchronization primitives.
-    /// </summary>
-    public void Dispose()
-    {
-        _inactivityTimer.Dispose();
-        _lock.Dispose();
-        GC.SuppressFinalize(this);
-    }
-}

FinlyticAssets/Util/AssetsMqttClient.cs

@@ -1,46 +1,74 @@
-using System.Text.Json;
+using System.Text.Json;
 using FinlyticAssets.Services;
 using FinlyticCore.Entities.Assets;
+using FinlyticCore.Models;
 using FinlyticCore.Models.Assets;
 using FinlyticCore.Util;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
 
 namespace FinlyticAssets.Util;
 
 /// <summary>
 /// Represents a managed MQTT client acting as a server-side RPC provider within the asset microservice.
-/// It subscribes to request topics, processes incoming JSON payloads via the database service, and publishes 
+/// It subscribes to request topics, processes incoming JSON payloads via the database and index service, 
-/// the requested asset entities back to the corresponding response topic.
+/// and publishes the requested asset entities or logo files back to the response topic.
+/// Also implements <see cref="IHostedService"/> to manage its own lifecycle connections.
 /// </summary>
-public class AssetsMqttClient : ManagedMqttClient
+public class AssetsMqttClient(
+    ILogger<AssetsMqttClient> logger, 
+    IServiceScopeFactory scopeFactory, 
+    IConfiguration configuration) : ManagedMqttClient(logger), IHostedService
 {
-    private readonly IServiceScopeFactory _scopeFactory;
+
-    private readonly ILogger<AssetsMqttClient> _logger;
 
     /// <summary>
-    /// Initializes a new instance of the <see cref="AssetsMqttClient"/> class.
+    /// Starts the MQTT client and connects to the configured broker.
     /// </summary>
-    /// <param name="logger">The logger used to record connection, error, and status messages.</param>
+    /// <param name="cancellationToken">A token to monitor for cancellation requests.</param>
-    /// <param name="dbService">The database service used for querying and validating assets.</param>
+    /// <returns>A task representing the asynchronous start operation.</returns>
-    public AssetsMqttClient(ILogger<AssetsMqttClient> logger, IServiceScopeFactory scopeFactory) 
+    public async Task StartAsync(CancellationToken cancellationToken)
-        : base(logger)
     {
-        _scopeFactory = scopeFactory;
+        var config = new MqttConfiguration()
-        _logger = logger;
+        {
+            Host = configuration["MQTT:Host"] ?? configuration["MQTT__Host"]!,
+            Port = Convert.ToInt32(configuration["MQTT:Port"] ?? configuration["MQTT__Port"]!),
+            ClientId = $"{(configuration["MQTT:ClientId"] ?? configuration["MQTT__ClientId"]!)}_{Guid.NewGuid()}"
+        };
+
+        await ConnectAsync(config);
+    }
+
+    /// <summary>
+    /// Gracefully stops and disconnects the MQTT client.
+    /// </summary>
+    /// <param name="cancellationToken">A token to monitor for cancellation requests.</param>
+    /// <returns>A task representing the asynchronous stop operation.</returns>
+    public async Task StopAsync(CancellationToken cancellationToken)
+    {
+        await DisconnectAsync();
     }
 
     /// <summary>
     /// Invoked automatically once the connection to the MQTT broker is successfully established or restored.
-    /// Registers the required wildcard subscriptions for incoming asset validation and search requests.
+    /// Registers subscriptions for asset validation, search, and logo download requests.
     /// </summary>
     /// <returns>A <see cref="Task"/> representing the asynchronous subscription operation.</returns>
     protected override async Task OnConnectedAsync()
     {
         await SubscribeAsync("services/request/assets_Get/#");
         await SubscribeAsync("services/request/assets_Search/#");
+        await SubscribeAsync("services/request/assets_GetDiscovery/#");
+        await SubscribeAsync("services/request/assets_FetchLogo/#");
+        await SubscribeAsync("services/request/health_Ping/#");
+        await SubscribeAsync("services/config/updated/#");
     }
 
+
     /// <summary>
-    /// Processes incoming messages on the subscribed topics, executes the corresponding database query, 
+    /// Processes incoming messages on the subscribed topics, executes the corresponding service methods, 
     /// and publishes the result to the response topic while preserving the correlation ID.
     /// </summary>
     /// <param name="topic">The MQTT topic on which the message was received.</param>
@@ -48,46 +76,144 @@ public class AssetsMqttClient : ManagedMqttClient
     /// <returns>A <see cref="Task"/> representing the asynchronous message processing operation.</returns>
     protected override async Task OnMessageReceivedAsync(string topic, string payload)
     {
+        if (topic.StartsWith("services/config/updated", StringComparison.OrdinalIgnoreCase))
+        {
+            await HandleConfigUpdatedAsync(topic, payload);
+            return;
+        }
+
         var segments = topic.Split('/');
         if (segments.Length < 4) return;
 
         var channel = segments[2];
-        var correlationId = segments[3];
+        var correlationId = segments[segments.Length - 1];
+
+        if (topic.Contains("health_Ping", StringComparison.OrdinalIgnoreCase))
+        {
+            await HandleHealthPingAsync(topic, segments, correlationId);
+            return;
+        }
 
         try
         {
-            List<AssetEntity> responseData = [];
+            using var scope = scopeFactory.CreateScope();
-
-            using var scope = _scopeFactory.CreateScope();
             var dbService = scope.ServiceProvider.GetRequiredService<IAssetsDbService>();
+            var indexService = scope.ServiceProvider.GetRequiredService<IAssetsIndexService>();
+
+            if (channel == "assets_FetchLogo")
+            {
+                await HandleFetchLogoAsync(payload, correlationId, indexService);
+                return;
+            }
+
+            List<AssetEntity> responseData = [];
 
             switch (channel)
             {
                 case "assets_Get":
-                    var validReq = JsonSerializer.Deserialize<GetValidAssetRequest>(payload);
+                    responseData = await HandleAssetsGetAsync(payload, dbService);
-                    if (validReq != null)
-                    {
-                        responseData = await dbService.GetValidAssetsByIsinAsync(validReq.Isin);
-                    }
                     break;
-
                 case "assets_Search":
-                    var searchReq = JsonSerializer.Deserialize<SearchAssetsRequest>(payload);
+                    responseData = await HandleAssetsSearchAsync(payload, dbService);
-                    if (searchReq != null)
+                    break;
-                    {
+                case "assets_GetDiscovery":
-                        responseData = await dbService.FindAffectedActiveAssetsAsync(searchReq.SearchQuery);
+                    responseData = await HandleAssetsGetDiscoveryAsync(payload, dbService);
-                    }
                     break;
             }
 
-            {
+            string defaultResponseTopic = $"services/response/{channel}/{correlationId}";
-                string responseTopic = $"services/response/{channel}/{correlationId}";
+            await PublishAsync(defaultResponseTopic, responseData.ToDtoList());
-                await PublishAsync(responseTopic, responseData.ToDtoList());
-            }
         }
         catch (Exception ex)
         {
             OnError(ex);
         }
     }
+
+    private async Task HandleConfigUpdatedAsync(string topic, string payload)
+    {
+        if (!topic.EndsWith("FinlyticAssets", StringComparison.OrdinalIgnoreCase))
+            return;
+
+        logger.LogInformation("[{Channel}] [AssetsMqttClient] Received config update event for FinlyticAssets.", "AssetsChannel");
+        try
+        {
+            var updatePayload = JsonSerializer.Deserialize(payload, FinlyticJsonSerializerContext.Default.ServiceConfigUpdatePayload);
+            if (updatePayload?.Settings != null && updatePayload.Settings.Count > 0)
+            {
+                using var scope = scopeFactory.CreateScope();
+                var settingsDb = scope.ServiceProvider.GetRequiredService<ISettingsDbService>();
+                await settingsDb.UpdateSettingsFromDictionary(updatePayload.Settings);
+                logger.LogInformation("[{Channel}] [AssetsMqttClient] Persisted {Count} updated settings to FinlyticAssets database.", "AssetsChannel", updatePayload.Settings.Count);
+            }
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "[{Channel}] [AssetsMqttClient] Error processing MQTT config update event.", "AssetsChannel");
+        }
+    }
+
+    private async Task HandleHealthPingAsync(string topic, string[] segments, string correlationId)
+    {
+        bool isForMe = segments.Length >= 5
+            ? segments[3].Equals("FinlyticAssets", StringComparison.OrdinalIgnoreCase)
+            : topic.Contains("FinlyticAssets", StringComparison.OrdinalIgnoreCase);
+
+        if (isForMe)
+        {
+            string respTopic = $"services/response/health_Ping/{correlationId}";
+            await PublishAsync(respTopic, new FinlyticCore.Dtos.ServiceHealthResponse("FinlyticAssets", "Online", DateTime.UtcNow, "Connected"));
+            logger.LogInformation("[{Channel}] [AssetsMqttClient] Responded to live health_Ping RPC request [CorrelationId: {CorrelationId}].", "AssetsChannel", correlationId);
+        }
+    }
+
+    private async Task HandleFetchLogoAsync(string payload, string correlationId, IAssetsIndexService indexService)
+    {
+        var req = JsonSerializer.Deserialize(payload, FinlyticJsonSerializerContext.Default.IsinRequest);
+        string? isin = req?.Isin;
+        string? savedPath = null;
+
+        if (!string.IsNullOrEmpty(isin))
+        {
+            savedPath = await indexService.DownloadAndSaveLogoAsync(isin);
+        }
+
+        string responseTopic = $"services/response/assets_FetchLogo/{correlationId}";
+        await PublishAsync(responseTopic, new FinlyticCore.Dtos.FetchLogoResponse(isin, savedPath, savedPath != null));
+    }
+
+    private async Task<List<AssetEntity>> HandleAssetsGetAsync(string payload, IAssetsDbService dbService)
+    {
+        var validReq = JsonSerializer.Deserialize(payload, FinlyticJsonSerializerContext.Default.GetValidAssetRequest);
+        if (validReq != null)
+        {
+            return await dbService.GetValidAssetsByIsinAsync(validReq.Isin);
+        }
+        return [];
+    }
+
+    private async Task<List<AssetEntity>> HandleAssetsSearchAsync(string payload, IAssetsDbService dbService)
+    {
+        var searchReq = JsonSerializer.Deserialize(payload, FinlyticJsonSerializerContext.Default.SearchAssetsRequest);
+        if (searchReq != null)
+        {
+            return await dbService.FindAffectedActiveAssetsAsync(searchReq.SearchQuery);
+        }
+        return [];
+    }
+
+    private async Task<List<AssetEntity>> HandleAssetsGetDiscoveryAsync(string payload, IAssetsDbService dbService)
+    {
+        int limit = 15;
+        if (!string.IsNullOrWhiteSpace(payload))
+        {
+            try
+            {
+                var discReq = JsonSerializer.Deserialize(payload, FinlyticJsonSerializerContext.Default.GetDiscoveryAssetsRequest);
+                if (discReq != null && discReq.Limit > 0) limit = discReq.Limit;
+            }
+            catch { }
+        }
+        return await dbService.GetDiscoveryAssetsAsync(limit);
+    }
 }

FinlyticAssets/Util/StringCodeGenerator.cs

@@ -1,8 +1,11 @@
-namespace FinlyticAssets.Util;
+namespace FinlyticAssets.Util;
 
 public class StringCodeGenerator
 {
     
+    /// <summary>
+    /// Generates a W3C traceparent string for telemetry tracking.
+    /// </summary>
     public static string GenerateTraceparent()
     {
         var traceId = Guid.NewGuid().ToString("N"); 

FinlyticAssets/Util/TradeRepublicClient.cs

@@ -1,252 +0,0 @@
-using System.Collections.Concurrent;
-using System.Text.Json;
-using FinlyticAssets.Models.DataToObject.TradeRepublic;
-
-namespace FinlyticAssets.Util;
-
-/// <summary>
-/// A managed WebSocket client designed to communicate with the Trade Republic API.
-/// Handles asynchronous requests, generic serialization, and automatic subscription management.
-/// </summary>
-public class TradeRepublicClient : ManagedWebSocket
-{
-    private readonly ILogger<TradeRepublicClient> _logger;
-    private int _currentSub;
-    private readonly ConcurrentDictionary<int, TaskCompletionSource<ReceivedMessage>> _pendingRequests = new();
-
-    /// <summary>
-    /// Wird ausgelöst, wenn Trade Republic asynchrone Updates (z.B. Live-Preise) schickt, 
-    /// auf die niemand aktiv per SendRequestAsync wartet.
-    /// </summary>
-    public event Action<ReceivedMessage>? UnhandledMessageReceived;
-
-    /// <summary>
-    /// Wird ausgelöst, wenn Trade Republic Systemnachrichten oder Fehler ohne ID schickt.
-    /// </summary>
-    public event Action<string>? SystemMessageReceived;
-    
-    /// <summary>
-    /// Initializes a new instance of the TradeRepublicClient.
-    /// Call InitAsync() afterwards to establish the connection.
-    /// </summary>
-    /// <param name="logger">The logger instance for tracking socket events and errors.</param>
-    public TradeRepublicClient(ILogger<TradeRepublicClient> logger)
-    {
-        _logger = logger;
-    }
-
-    /// <summary>
-    /// Asynchronously establishes the WebSocket connection to the Trade Republic API.
-    /// </summary>
-    public async Task<bool> InitAsync()
-    {
-        await ConnectAsync("wss://api.traderepublic.com/", TimeSpan.FromSeconds(10));
-
-        var tcs = new TaskCompletionSource<ReceivedMessage>(TaskCreationOptions.RunContinuationsAsynchronously);
-
-        _pendingRequests.TryAdd(-1, tcs);
-
-        try
-        {
-            var json = JsonSerializer.Serialize(new TradeRepublicConnectRequest());
-            await SendAsync($"connect 34 {json}");
-            
-            var res = await tcs.Task.WaitAsync(TimeSpan.FromSeconds(5));
-
-            if (string.IsNullOrWhiteSpace(res.Type)) return false;
-
-            var isConnected = res.Type == "connected";
-            
-            if (isConnected)
-            {
-                _logger.LogInformation("WebSocket connection to Trade Republic established.");
-            }
-            
-            return isConnected;
-        }
-        catch (TimeoutException)
-        {
-            _pendingRequests.TryRemove(-1, out _);
-            _logger.LogWarning("Timeout while waiting for response to ID {Id}.", -1);
-            return false;
-        }
-        catch (TaskCanceledException)
-        {
-            _logger.LogWarning(
-                "Trade Republic immediately rejected the request for ID {Id} (e.g., invalid ISIN or access denied).",
-                -1);
-            return false;
-        }
-    }
-
-    /// <summary>
-    /// Sends a strongly-typed request to the API and waits for the corresponding response.
-    /// Automatically handles the subscription ID and unsubscribes after completion or failure.
-    /// </summary>
-    /// <typeparam name="TResponse">The expected type of the response payload.</typeparam>
-    /// <typeparam name="TRequest">The type of the request payload.</typeparam>
-    /// <param name="request">The request data to be serialized and sent.</param>
-    /// <returns>The deserialized response object, or null if the request timed out or was canceled.</returns>
-    public async Task<TResponse?> SendRequestAsync<TResponse, TRequest>(TRequest request)
-        where TResponse : class where TRequest : class
-    {
-        var tempSub = Interlocked.Increment(ref _currentSub);
-
-        var msg = $"sub {tempSub} {JsonSerializer.Serialize(request)}";
-
-        Console.WriteLine(msg);
-        
-        var tcs = new TaskCompletionSource<ReceivedMessage>(TaskCreationOptions.RunContinuationsAsynchronously);
-
-        _pendingRequests.TryAdd(tempSub, tcs);
-
-        await SendAsync(msg);
-
-        try
-        {
-            var res = await tcs.Task.WaitAsync(TimeSpan.FromSeconds(5));
-            
-            if (res.Type == null)
-            {
-                _logger.LogWarning("Trade Republic rejected the request for ID {Id} with message type '{Type}'.", tempSub, res.Type);
-                return null;
-            }
-
-            if (!res.Type.Contains('A'))
-            {
-                return null;
-            }
-            
-            if (string.IsNullOrWhiteSpace(res.Data)) return null;
-
-            if (typeof(TResponse) == typeof(string))
-            {
-                return res.Data as TResponse;
-            }
-            else
-            {
-                return JsonSerializer.Deserialize<TResponse>(res.Data);
-            }
-        }
-        catch (TimeoutException)
-        {
-            _pendingRequests.TryRemove(tempSub, out _);
-            _logger.LogWarning("Timeout while waiting for response to ID {Id}.", tempSub);
-            return null;
-        }
-        catch (TaskCanceledException)
-        {
-            _logger.LogWarning(
-                "Trade Republic immediately rejected the request for ID {Id} (e.g., invalid ISIN or access denied).",
-                tempSub);
-            return null;
-        }
-        finally
-        {
-            if (IsConnected)
-            {
-                try
-                {
-                    await SendAsync($"unsub {tempSub}");
-                }
-                catch
-                {
-                    //ignore
-                }
-            }
-        }
-    }
-/// <summary>
-/// Processes incoming WebSocket messages, extracting the JSON payload and resolving pending tasks.
-/// </summary>
-/// <param name="message">The raw text message received from the server.</param>
-protected override void OnMessageReceived(string message)
-{
-    if (string.IsNullOrWhiteSpace(message)) return;
-
-    // 1. Handshake-Nachricht direkt abfangen
-    if (message == "connected")
-    {
-        if (_pendingRequests.TryRemove(-1, out var tcs))
-        {
-            tcs.SetResult(new ReceivedMessage(-1, "connected", null));
-        }
-        return;
-    }
-
-    // 2. Erstes Leerzeichen finden, um die ID zu isolieren
-    var firstSpaceIndex = message.IndexOf(' ');
-    if (firstSpaceIndex <= 0)
-    {
-        _logger.LogWarning("Unknown message format received: {Message}", message);
-        SystemMessageReceived?.Invoke(message);
-        return;
-    }
-
-    var idString = message[..firstSpaceIndex];
-    if (!int.TryParse(idString, out var responseId))
-    {
-        SystemMessageReceived?.Invoke(message);
-        return;
-    }
-
-    // Der Rest nach der ID (z. B. "A {...}" oder "C")
-    var remainder = message[firstSpaceIndex..].Trim();
-
-    // 3. Nachrichtentyp ("A", "C", etc.) und JSON-Inhalt sauber trennen
-    var nextSpaceIndex = remainder.IndexOf(' ');
-    string msgType;
-    string? json = null;
-
-    if (nextSpaceIndex == -1)
-    {
-        // Kein weiteres Leerzeichen vorhanden (wie bei "2 C")
-        msgType = remainder;
-    }
-    else
-    {
-        // Typ und JSON trennen (wie bei "2 A {...}")
-        msgType = remainder[..nextSpaceIndex].Trim();
-        json = remainder[nextSpaceIndex..].Trim();
-    }
-
-    // 4. KORREKTUR: "C" signalisiert nur das Ende des Datenstroms auf dieser ID.
-    // Wir ignorieren es, da die Daten bereits im Typ "A" übertragen wurden.
-    if (msgType == "C")
-    {
-        _logger.LogDebug("Trade Republic closed subscription channel for ID {ResponseId}.", responseId);
-        return; 
-    }
-
-    // 5. Task auflösen, falls jemand auf diese ID wartet
-    if (_pendingRequests.TryRemove(responseId, out var pendingTcs))
-    {
-        pendingTcs.SetResult(new ReceivedMessage(responseId, msgType, json));
-    }
-    else
-    {
-        UnhandledMessageReceived?.Invoke(new ReceivedMessage(responseId, msgType, json));
-    }
-}
-
-    /// <summary>
-    /// Determines whether the incoming message is a keep-alive echo response.
-    /// </summary>
-    /// <param name="message">The raw text message.</param>
-    /// <returns>True if the message is an echo response; otherwise, false.</returns>
-    protected override bool IsKeepAliveMessage(string message)
-    {
-        return message.StartsWith("echo");
-    }
-
-    /// <summary>
-    /// Sends a periodic keep-alive echo to maintain the WebSocket connection.
-    /// </summary>
-    protected override Task SendLifeMessageAsync()
-    {
-        var echo = $"echo {DateTimeOffset.UtcNow.ToUnixTimeSeconds()}";
-        return SendAsync(echo);
-    }
-}
-
-public record ReceivedMessage(int? Sub, string? Type, string? Data);

FinlyticAssets/Util/Volumes.cs

@@ -1,4 +1,4 @@
-namespace FinlyticAssets.Util;
+namespace FinlyticAssets.Util;
 
 public class Volumes
 {
@@ -6,4 +6,9 @@ public class Volumes
     /// Der relative Pfad für die schlanke Index-Datei (ISINs + Namen) zur Asset-Erkennung.
     /// </summary>
     public const string IndexRelativePath = "assets/index";
+
+    /// <summary>
+    /// Der relative Pfad für lokal gespeicherte Asset-Logos (nach ISIN benannt).
+    /// </summary>
+    public const string LogosRelativePath = "assets/logos";
 }

FinlyticAssets/appsettings.json

@@ -2,7 +2,8 @@
   "Logging": {
     "LogLevel": {
       "Default": "Information",
-      "Microsoft.Hosting.Lifetime": "Information"
+      "Microsoft.Hosting.Lifetime": "Information",
+      "Microsoft.EntityFrameworkCore.Database.Command": "Warning"
     }
   }
 }