CSharp-Coder

Learn CQRS and MediatR in ASP.NET Core with practical C# examples. Master commands, queries, and pipeline behaviors — start building cleaner APIs today. If you have ever opened a service class in an ASP.NET Core project and found a 2,000-line file that reads data, writes data, validates input, sends emails, and logs everything in between, you already understand why CQRS and MediatR in ASP.NET Core have become two of the most searched-for patterns in the .NET ecosystem. CQRS (Command Query Responsibility Segregation) splits your application into two clean halves — operations that change state and operations that read state — while MediatR gives you a lightweight, in-process messaging library to wire it all together without controllers knowing anything about your business logic. In this tutorial, you will learn what CQRS actually is (and what it is not), why MediatR is the most popular way to implement it in .NET, and how to build a complete, runnable example with commands, queries,...