Simplify Component Communication in .NET with MediatR

MediatR, the acclaimed NuGet package, is a game-changer for .NET development, revolutionizing the way we handle communication and achieve loose coupling between components. Let's explore the key features of MediatR in this LinkedIn post:

🔹 Mediator Pattern Made Easy:

MediatR provides a robust implementation of the mediator pattern for .NET, enabling seamless communication and decoupling between components. Say goodbye to rigid dependencies and welcome scalable and maintainable applications.

🔹 Request/Response Messages:

With MediatR, you can dispatch request/response messages effortlessly. These messages are directed to a single handler responsible for processing them. This approach streamlines your codebase and promotes a clear separation of concerns, enhancing the overall maintainability and testability of your application.

🔹 Notification Messages:

MediatR takes it a step further by enabling the dispatching of notification messages. These messages are distributed to multiple handlers, allowing you to implement publish/subscribe or observer patterns within your application. This flexibility empowers you to build highly extensible and event-driven systems.

By leveraging MediatR in your .NET projects, you unlock the following benefits:

✅ Simplified communication and reduced coupling between components.

✅ Clean separation of concerns, resulting in highly maintainable code.

✅ Improved testability with easy mocking and unit testing of individual handlers.

✅ Enhanced extensibility through the publish/subscribe mechanism for notification messages.

Join the growing community of developers embracing MediatR and revolutionize your application architecture today!

//Inject MediatR to your DI container
services.AddMediatR(cfg => {
    cfg.RegisterServicesFromAssembly(typeof(Program).Assembly);
});

// Request/response messages
public class CreateTodoItemCommand : IRequest<int> { }
public class CreateTodoItemCommandHandler : IRequestHandler<CreateTodoItemCommand, int>
{
    public Task<int> Handle(CreateTodoItemCommandrequest, CancellationToken cancellationToken)
    {
        // Your application logic
       return Task.FromResult(0);
    }
}

// Notification messages
public class TodoItemCompletedEvent: INotification { } 

public class TodoItemCompletedEventHandler : INotificationHandler<TodoItemCompletedEvent>
{
    public Task Handle(TodoItemCompletedEvent notification, CancellationToken cancellationToken)
    {
        // Your application logic
        return Task.CompletedTask;
    }
}

public class TodoItemCompletedSendMailEventHandler : INotificationHandler<TodoItemCompletedEvent>
{
    public Task Handle(TodoItemCompletedEvent notification, CancellationToken cancellationToken)
    {
        // Your application logic
        return Task.CompletedTask;
    }
}

// Let's Call
// private ISender _mediator;
_mediator.Send(new CreateTodoItemCommand())

// private IPublisher _publisher;
_publisher.Publish(new TodoItemCompletedEvent());