MediatR is a popular library with a simple mediator pattern implementation in .NET. Here's a definiton taken from MediatR's GitHub: "In-process messaging with no dependencies." With the rise in popularity of the CQRS pattern, MediatR became the go-to library to implement commands and queries. However, MediatR also has support for the publish-subscribe pattern using notifications. You can publish an INotification instance and have multiple subscribers handle the published message. Until recent...
