go-middleware

what’s middleware

tags: learning go programming

content

• a Handler in a Go http server is a type that implements ServeHTTP method go-http-handler
• a middleware is something that wraps a handler in another handler
  • it means, a middleware function takes in a handler as arguments, and returns another handler
  • a middleware’s signature:

func MyMiddleware(next http.Handler) http.Handler

• go’s middleware is essentially a wrapping pattern
  • see:

    go-function-type-2#function-wrapping

• it’s kinda similar to python’s decorator

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