github.com/bitnami-labs/promhttpmux (go): Package promhttpmux offers an opinionated metric exporter for http mux/routers.  The intended usage for this package is to just wrap your whole ServeMux with the promhttpmux.Interceptor and have it report a bunch of metrics partitioned by status code, http method and mux's pattern (aka route).  E.g.: http_requests_total{code="200",method="GET",route="/api/v1/auth/status"} 123  Usage:  - http_requests_total - http_request_duration_seconds - http_request_header_duration_seconds - http_request_size_bytes - http_response_size_bytes  All durations are histograms because summaries are not aggregatable (see excellent explaination why in http://latencytipoftheday.blogspot.it/2014/06/latencytipoftheday-you-cant-average.html)  Aggregation are important when you have replicas of your service.  Request and response sizes are summaries because we have no idea about reasonable bucket sizes for them.
Keywords: go|prometheus