MetricsRegistry registry = new MetricsRegistry(); registry.register("my.metric", new CounterMetric()); registry.get("my.metric").increment(); registry.get("my.metric").decrement(); reporters: - type: console frequency: 1 format: "%name%: %value%" - type: file filename: "metrics-report.txt" frequency: 60 format: "%name%\t%value%" Metrics.start();