Monotonic Counter Uint

A Monotonic Counter (uint64) 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:

import {Registry} from "nflx-spectator";

const registry = new Registry();
void registry.monotonic_counter_uint("iface.bytes").set(BigInt(1));

const iface_bytes = registry.new_id("iface.bytes");
void registry.monotonic_counter_uint_with_id(iface_bytes).set(BigInt(1));