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Search Results for: Mediator

Queries with Mediator and Command Patterns

I recently got a really great comment from my post on using Query Objects instead of Repositories.  Although that blog post is now 2 years old, I still use the same concepts today in my applications. What I thought may be relevant is to elaborate more on why and when I use the mediator and command pattern for the query side. It may seem obvious on the command side, but not really needed on the query side. Here a portion of the comment from Chris: I’m struggling a bit to see the killer reason for using Query objects over repository. I can see… Read More »Queries with Mediator and Command Patterns

MicroBus: In-Process Mediator

I’ve blogged about the mediator pattern a lot.  Primarily because it’s been a good fit in several of the applications I’ve developed over the last few years. Mediator Pattern For those completely unfamiliar with the mediator pattern, here’s a brief summary: With the mediator pattern, communication between objects is encapsulated with a mediator object. Objects no longer communicate directly with each other, but instead communicate through the mediator. This reduces the dependencies between communicating objects, thereby lowering the coupling. Libraries I’ve written my own implementations of the mediator library from project to project.  Once I finally found the MediatR library, I’ve pretty… Read More »MicroBus: In-Process Mediator

Mediator between Integration Boundaries

If you have followed my Fat Controller CQRS Diet series, you will see that I use the mediator pattern. More specifically I use MediatR library in all the code examples. I recently gave a talk at CodeMash 2017 with the same title.   It went a bit more in depth about why and where I use the mediator pattern. Integration Boundary I want to decouple my application from the framework I’m using. The mediator pattern is one way of achieving that. My code should be be my code.  Not littered through framework code. Generally, I don’t want to have any dependencies on MVC, Web API,… Read More »Mediator between Integration Boundaries