internal

var (
	MetricClientReqDur = metric.NewHistogramVec(&metric.HistogramVecOpts{
		Namespace: clientNamespace,
		Subsystem: "requests",
		Name:      "duration_ms",
		Help:      "http client requests duration(ms).",
		Labels:    []string{"name", "method", "url"},
		Buckets:   []float64{0.25, 0.5, 1, 2, 5, 10, 25, 50, 100, 250, 500, 1000, 2000, 5000, 10000, 15000},
	})

	MetricClientReqCodeTotal = metric.NewCounterVec(&metric.CounterVecOpts{
		Namespace: clientNamespace,
		Subsystem: "requests",
		Name:      "code_total",
		Help:      "http client requests code count.",
		Labels:    []string{"name", "method", "url", "code"},
	})
)