Monotonic Counter

A Monotonic Counter (float) is used to measure the rate at which an event is occurring, when the source data is a monotonically increasing number. A minimum of two samples must be sent, in order to calculate a delta value and report it to the backend as a rate-per-second. A variety of networking metrics may be reported monotonically, and this metric type provides a convenient means of recording these values, at the expense of a slower time-to-first metric.

Call set() when an event occurs:

from spectator.registry import Registry

registry = Registry()
registry.monotonic_counter("iface.bytes").set(10)

iface_bytes = registry.new_id("iface.bytes")
registry.monotonic_counter_with_id(iface_bytes).set(10)