Building a Custom Domain Events Dispatcher in .NET

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Thinking of removing MediatR from your .NET application?

In this video, I show you how I built a custom domain event dispatcher to replace MediatR’s IPublisher.Publish functionality — without breaking my application layer.

You’ll learn:
- How MediatR handles domain events under the hood
- How to define IDomainEvent and IDomainEventHandler interfaces
- Wiring up the dispatcher with EF Core and SaveChangesAsync
- Using reflection and scoped DI to invoke handlers
- Trade-offs (performance, type safety, complexity)

Whether you're building a Clean Architecture app or want more control over your CQRS stack — this guide will help you move away from third-party dependencies like MediatR.

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Chapters
0:00 How Domain Events Work
2:42 Creating IDomainEventHandler
4:37 Adding Handlers in DI
6:47 Creating DomainEventsDispatcher
13:51 Testing the Implementation

Видео Building a Custom Domain Events Dispatcher in .NET канала Milan Jovanović