ASP.NET Core Middleware Explained

What is Middleware?

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ASP.NET Core middleware Explained A component in the ASP.NET Core request pipeline that:
  • Processes requests & responses
  • Runs custom logic
  • Decides whether to pass to the next middleware

Middleware Flow

  • Modify request → call next() → update response
  • Run logic → process response
  • Modify request → hand over to Controller

Common Built-in Middleware

  • UseRouting → Endpoint mapping
  • UseAuthentication → Identity check
  • UseAuthorization → Access control
  • UseExceptionHandler → Error handling
  • UseStaticFiles → CSS/JS/Images
  • UseCors → Cross-origin requests
  • UseResponseCompression → Faster apps

Why It Matters

  • Logging & Monitoring
  • Auth & Security
  • Error Handling
  • Performance Boost
  • Custom Business Logic
  • Middleware makes ASP.NET Core apps flexible, modular & powerful.

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