This Plug is meant to help collect statistics about the time it takes your application to process HTTP requests. It emits a value for the processing time after every processed HTTP request.

The backend needs to provide a histogram function that the Plug uses to send the metrics over. This function's behavior is described in PlugStats.Behaviours.Backend.

The metric emitted is called "web.request" (configurable) and contains the following tags:

• action - Controller and action name, underscored (e.g. "queue_controller.show")
• http_method - HTTP method in lower case
• http_status - Response status code (200, 404 etc)
• http_status_class - Response status class (2xx, 4xx etc)

The package can be installed by adding stats_plug to your list of dependencies in mix.exs:

def deps do
  [
    {:stats_plug, "~> 1.0.0"}
  ]
end

Documentation can be generated with ExDoc and published on HexDocs. The docs can be found at https://hexdocs.pm/stats_plug.