NewDiscardProvider returns a provider that will discard all metrics.

NewDogStatsdProvider will return a Provider implementation that is a simple wrapper around a dogstatsd.Emitter.

NewExpvarProvider is a very thin wrapper over the expvar package.

NewGraphiteProvider will return a Provider implementation that is a simple wrapper around a graphite.Emitter.

NewPrometheusProvider returns a Prometheus provider that uses the provided namespace and subsystem for all metrics.

NewStatsdProvider will return a Provider implementation that is a simple wrapper around a statsd.Emitter.

Provider represents a union set of constructors and lifecycle management functions for each supported metrics backend.