NewChain creates a new chain of middlewares with a final handler Last is the last Middleware in the call stack, the rest will be called in inverse order- (The last parameter is the first to be called) Final handler is the original handler - not a middleware.

NewMiddlewareChain creates a new chain of middlewares without a final handler-This works in the same way as NewChain, but returns a Middleware instead of a http Handler.

LogMiddleware log all the requests in the provided log.

SecurityHeadersMiddleware add recomended security headers in the http response.

UserAuthMiddleware authenticate a user.

Middleware define the interface for middleware to implement.