NewCounter creates a Counter metrics under the global namespace returns nop if metrics are disabled.

NewGauge creates a Gauge metrics under the global namespace returns nop if metrics are disabled.

NewHistogram creates a Histogram metrics under the global namespace returns nop if metrics are disabled.

NewMeteredCache wraps cache with metrics are returns a monitored cache.

StartCollectingMetrics begins listening and supplying metrics on localhost:`metricsPort`/metrics.

Namespace is the basic namespace where all metrics are defined under.

ResultLabel makes a consistent name for results.

Enabled variable is used to turn on or of the metrics server.

MeteredCache is a wrapper around a cache that monitors size, hits and misses.

Cache is a basic cache interface that we can wrap to meter.

Counter is a metric type used to represent a monotonically increased/decreased numeric value.

Gauge is a metric type used to represent a numeric value.

Histogram is a metric type used to sum up multiple observations over time.