If you've built any web application in Go, you've probably heard about middlewares. But what exactly are they? A middleware is just a function that sits between your HTTP server and your route handlers. It can inspect, modify, or even stop a request before it reaches your main application logic. Think of it as a pipeline.Every request passes through each middleware in order before hitting your handler, and the response travels back through them on the way out. Example A middleware accepts a handler and returns a new one: func MyMiddleware ( next HandlerFunc ) HandlerFunc { return func ( c Context ) error { // runs before your handler err := c . Next ( next ) // runs after your handler return err } } Enter fullscreen mode Exit fullscreen mode c.Next() When you register multiple middlewares, your framework doesn't run them independently. It builds a chain. Each middleware wraps the next one, like nested functions. c.Next() is the call that says ,pass control to whatever comes next in that chain.…