pub const METRICS_INTERVAL: Duration;Expand description
How often gunnar serve writes its counters to the log.
Sixty seconds: often enough that an operator watching an incident sees the numbers move while they are still watching, rare enough that a year of journal on an idle appliance is not made of heartbeats. The line is skipped when nothing has changed since the last one, so “quiet” and “not running” stay distinguishable. A busy server is never quiet.