NewMetric returns a new empty metric of dimension len(keys).

NewStore returns a new metric Store.

Buckets indicates this metric is a histogram metric type.

Counter is a monotonically nondecreasing metric.

Float indicates this metric is a floating-point metric type.

Gauge is a Kind that can take on any value, and may be set discontinuously from its previous value.

Histogram is a Kind that observes a value and stores the value in a bucket.

Int indicates this metric is an integer metric type.

String indicates this metric contains printable string values.

Text is a special metric type for free text, usually for operating as a 'hidden' metric, as often these values cannot be exported.

Timer is a specialisation of Gauge that can be used to store time intervals, such as latency and durations.

LabelSet is an object that maps the keys of a Metric to the labels naming a Datum, for use when enumerating Datums from a Metric.

LabelValue is an object that names a Datum value with a list of label strings.

Metric is an object that describes a metric, with its name, the creator and owner program name, its Kind, a sequence of Keys that may be used to add dimension to the metric, and a list of LabelValues that contain data for labels in each dimension of the Keys.

Store contains Metrics.

Kind enumerates the types of metrics supported.

Type describes the type of value stored in a Datum.