t.requestsCount[tier] = stat
}

var (
	// {minio_node}_{tier}_{ttlb_seconds_distribution}
	tierTTLBMD = MetricDescription{
		Namespace: nodeMetricNamespace,
		Subsystem: tierSubsystem,
		Name:      ttlbDistribution,
		Help:      "Distribution of time to last byte for objects downloaded from warm tier",
		Type:      gaugeMetric,
	}

	// {minio_node}_{tier}_{requests_success}

	clusterMetricNamespace   MetricNamespace = "minio_cluster"
	healMetricNamespace      MetricNamespace = "minio_heal"
	interNodeMetricNamespace MetricNamespace = "minio_inter_node"
	nodeMetricNamespace      MetricNamespace = "minio_node"
	minioMetricNamespace     MetricNamespace = "minio"
	s3MetricNamespace        MetricNamespace = "minio_s3"
)

const (
	cacheSubsystem            MetricSubsystem = "cache"