@Override
  public Timekeeper timer(String name) {
    final String fullName = getMetricName(name);
    return timerCache.computeIfAbsent(
        fullName,
        fn -> new TimerProxy(metricService.getOrCreateTimer(fn, getMetricLevel(fullName))));
  }
Time taken to process write requests from client.
iotdb-core/consensus/src/main/java/org/apache/iotdb/consensus/ratis/metrics/IoTDBMetricRegistry.java