Idempotence is the property of certain operations in mathematics and computer science, that can be applied multiple times without changing the result beyond the initial application. When you click the “Place Order” button on magical unicorn e-commerce site, you expect your order to be submitted only once.  You also expect that your credit card on on the order you just placed shouldn’t happen more than once. There are different ways to handle idempotency at various levels of your application. Persistence Context is important.  In my context, I’m using a ACID compliant database (MySQL) for storing my current state. I’m also using… Read More »Idempotent Commands

I’m not a fan of fat controllers. One of the reasons I dislike having my core application logic in controllers is because I like using the web frameworks for what they are good at in my context. My context is usually creating web api’s. For me I use web frameworks as infrastructure that handles HTTP routing and endpoints Deserialization of input payloads Serialization of output payloads HTTP Headers and Status Codes Web Stuff (eg File Uploads) You get the gist, I like using it for handling the web.  Not for containing my features. If you have any questions, please follow me on Twitter.… Read More »Thin Controllers with CQRS and MediatR