}

            public synchronized void recordFailure() {
                requestCount++;
                failureCount++;
                lastUpdateTime = System.currentTimeMillis();
            }

            public synchronized void reset(long timestamp) {
                requestCount = 0;
                failureCount = 0;
                totalResponseTime = 0;

func (t *tierMetrics) logSuccess(tier string) {
	t.Lock()
	defer t.Unlock()

	stat := t.requestsCount[tier]
	stat.success++
	t.requestsCount[tier] = stat
}

func (t *tierMetrics) logFailure(tier string) {
	t.Lock()
	defer t.Unlock()

	stat := t.requestsCount[tier]
	stat.failure++
	t.requestsCount[tier] = stat
}

var (
	// {minio_node}_{tier}_{ttlb_seconds_distribution}