public static Timer getRaftApplyLogTimer() {
        return RAFT_APPLY_LOG_TIMER;
    }
@Test
    void testRaftApplyLogTimer() {
        Timer raftApplyTimerLog = MetricsMonitor.getRaftApplyLogTimer();
        raftApplyTimerLog.record(10, TimeUnit.SECONDS);
        raftApplyTimerLog.record(20, TimeUnit.SECONDS);
        assertEquals(0.5D, raftApplyTimerLog.totalTime(TimeUnit.MINUTES), 0.01);
        
        assertEquals(30D, raftApplyTimerLog.totalTime(TimeUnit.SECONDS), 0.01);
    }