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GerstITS.Examples.JobDashboard/Data/InMemoryDatabaseConfigurator.cs

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+using GerstITS.Data.EntityFramework;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Configuration;
+
+namespace GerstITS.Examples.JobDashboard.Data;
+
+/// <summary>
+/// Configures <see cref="JobRunDbContext" /> to use the EF Core InMemory provider
+/// (<c>UseInMemoryDatabase</c>) so the example runs with zero external database dependencies.
+///
+/// All contexts share the same named in-memory database, so records written by one job execution are
+/// visible to the next. No migrations are involved - the InMemory provider creates the model on demand.
+/// </summary>
+public sealed class InMemoryDatabaseConfigurator : DatabaseConfiguratorBase
+{
+    #region Constants
+
+    private const string DatabaseName = "GerstITS.Examples.JobRuns";
+
+    #endregion
+
+    #region Constructors
+
+    public InMemoryDatabaseConfigurator(IConfiguration configuration)
+        : base(configuration)
+    {
+    }
+
+    #endregion
+
+    #region DatabaseConfiguratorBase
+
+    public override void ConfigureModelCreating(ModelBuilder modelBuilder)
+    {
+        // JobRunEntity is mapped by convention; the InMemory provider needs no relational configuration.
+    }
+
+    protected override void ConfigureDatabase(DbContextOptionsBuilder optionsBuilder, string connectionString)
+    {
+        optionsBuilder.UseInMemoryDatabase(DatabaseName);
+    }
+
+    #endregion
+}

GerstITS.Examples.JobDashboard/Data/JobRunDbContext.cs

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+using GerstITS.Data.EntityFramework;
+using Microsoft.EntityFrameworkCore;
+
+namespace GerstITS.Examples.JobDashboard.Data;
+
+public sealed class JobRunDbContext : EntityFrameworkDbContextBase, IDbContext
+{
+    #region Properties
+
+    public DbSet<JobRunEntity> JobRuns => Set<JobRunEntity>();
+
+    protected override string ConnectionStringName => "JobRunDbContext";
+
+    #endregion
+
+    #region Constructors
+
+    public JobRunDbContext(IDatabaseConfigurator databaseConfigurator,
+                           DbContextOptions<JobRunDbContext> dbContextOptions)
+        : base(databaseConfigurator, dbContextOptions)
+    {
+    }
+
+    #endregion
+}

GerstITS.Examples.JobDashboard/Data/JobRunEntity.cs

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+using GerstITS.Data;
+
+namespace GerstITS.Examples.JobDashboard.Data;
+
+public sealed class JobRunEntity : EntityBase<int>
+{
+    #region Properties
+
+    public string JobName { get; set; }
+    public DateTimeOffset StartedAt { get; set; }
+    public long DurationMilliseconds { get; set; }
+    public bool Success { get; set; }
+    public string Error { get; set; }
+
+    #endregion
+}

GerstITS.Examples.JobDashboard/Data/NoDatabaseMigrationConfiguration.cs

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+using GerstITS.Data.EntityFramework;
+
+namespace GerstITS.Examples.JobDashboard.Data;
+
+/// <summary>
+/// The EF Core module registers an auto-migration startup task that requires an
+/// <see cref="IEntityFrameworkMigrationConfiguration" />. The InMemory provider has no migrations, so
+/// this implementation simply disables auto-migration.
+/// </summary>
+public sealed class NoDatabaseMigrationConfiguration : IEntityFrameworkMigrationConfiguration
+{
+    #region IEntityFrameworkMigrationConfiguration
+
+    public bool AutoMigrate => false;
+
+    #endregion
+}