GetOrCreateCounter returns registered counter with the given name or creates new counter if the registry doesn't contain counter with the given name.

GetOrCreateGauge returns registered gauge with the given name or creates new gauge if the registry doesn't contain gauge with the given name.

GetOrCreateHistogram returns registered histogram with the given name or creates new histogram if the registry doesn't contain histogram with the given name.

GetOrCreateSummary returns registered summary with the given name or creates new summary if the registry doesn't contain summary with the given name.

NewCounter registers and returns new counter with the given name.

NewGauge registers and returns gauge with the given name.

NewHistogram creates and returns new histogram with the given name.

NewSet creates new set of metrics.

NewSummary creates and returns new summary with the given name.

Setup starts a dedicated metrics server at the given address.

Set is a set of metrics.