NewMetricsMiddleware returns a new instance of metricsMiddleware.

NewRateLimiter returns a new instance of rateLimiter.

NewResponseLoggerMiddleware returns a new instance of responseLoggerMiddleware.

ReturnCodeRequestError defines a request which hasn't been executed successfully due to a bad request received.

ErrNilLimitsMapForEndpoints signals that a nil limits map has been provided.

ErrNilStatusMetricsExtractor signals that a nil status metrics extractor has been provided.

MiddlewareProcessor defines a processor used internally by the web server when processing requests.

RateLimiterHandler defines the actions that an implementation of rate limiter handler should do.

StatusMetricsExtractor defines what a status metrics extractor should do.