A high-performance mediator implementation for .NET 8+ with built-in support for background processing, persistent notifications, and deadlock-safe ConfigureAwait behavior by default. Modern alternative to MediatR with advanced features like compiled expressions, aggressive performance optimizations, automatic UI deadlock prevention, and crash-safe persistence. Supports .NET 9 and .NET 10.
A mediator implementation for with background processing and notification persistence.
Inspired by MediatR, this library was created as a free alternative with similar patterns but includes built-in persistence and background processing.
The name "SwartBerg" means "Black Mountain" in Afrikaans, it is a combination of my surname and my wife's maiden name. If you like to thank me for the library buy me a coffee. Link is at the bottom of this readme.
Features
High Performance: Precompiled generic delegates (no runtime expression compilation)
Background Processing: Non-blocking notification dispatch with worker pool
public class GetUserQuery : IRequest<User>
{
public int UserId { get; set; }
}
public class GetUserHandler : IRequestHandler<GetUserQuery, User>
{
public Task<User> Handle(GetUserQuery request, CancellationToken cancellationToken)
{
return Task.FromResult(new User { Id = request.UserId, Name = "John Doe" });
}
}
public class CreateUserCommand : IRequest
{
public string Name { get; set; }
public string Email { get; set; }
}
public class CreateUserHandler : IRequestHandler<CreateUserCommand>
{
public Task Handle(CreateUserCommand request, CancellationToken cancellationToken)
{
return Task.CompletedTask;
}
}
public class UserCreatedNotification : INotification
{
public int UserId { get; set; }
public string Name { get; set; }
}
public class SendWelcomeEmailHandler : INotificationHandler<UserCreatedNotification>
{
public Task Handle(UserCreatedNotification notification, CancellationToken cancellationToken)
{
return Task.CompletedTask;
}
}
