MetricsSystem.this by 1.this by n.Counter used to track a mutable number.Histogram used to measure a distribution of values.Timer used to measure durations and report rates.this by 1.this by n.MetricsSystem instance using the corresponding MetricsSystemFactory
available to ServiceLoader on the classpath.events occurrences.MetricsSystemFactory to create a MetricsSystem.MetricsSystem.ServiceLoader to instantiate a MetricsSystem.Counter implementation which does nothing.Histogram which does nothing.Meter which does nothing.MetricsSystem implementation which does nothing.NoopMetricsSystem.MetricsSystemFactory for the NoopMetricsSystem.Timer which does nothing.Timer.Context which does nothing.Gauge.Copyright © 2012-2020 Apache Software Foundation. All Rights Reserved.