MetricsSink.gauge

void gauge(scope  const(char)[]  name,  double  value,
          scope  const(MetricsTag)[]  tags =  null)

@safe nothrow;

Record a gauge value.

`name`	Metric name (e.g., `"eve.poll.events"`).
`value`	Current gauge value.
`tags`	Optional tags for dimensional grouping.