ASP.NET Middleware: Complete Guide from Basics to Advanced Patterns, Tips, and Performance

The ASP.NET Core middleware pipeline is the backbone of every HTTP request your application processes. Yet most developers only scratch the surface—registering UseAuthentication() and UseAuthorization() without understanding what actually happens in between. This comprehensive guide takes you from fundamental concepts to advanced patterns, performance optimization, and real-world usage scenarios. What is ASP.NET Middleware? Middleware in ASP.NET Core is software that's assembled into an app pipe