var builder = WebApplication.CreateBuilder(args);
builder.Services.AddScoped<ScopedMarker>(); builder.Services.AddTransient<TransientMarker>(); builder.Services.AddSingleton<RequestCounter>();
var app = builder.Build();
app.MapGet("/lifetimes", (ScopedMarker a, ScopedMarker b, TransientMarker x, TransientMarker y, RequestCounter counter) => new { sameScoped = ReferenceEquals(a, b), sameTransient = ReferenceEquals(x, y), request = counter.Next() });
app.Run();
public sealed class ScopedMarker { }
public sealed class TransientMarker { }
public sealed class RequestCounter { private int count; public int Next() => Interlocked.Increment(ref count); }