cache.go

package metrics

import "github.com/prometheus/client_golang/prometheus"

type CacheMetrics struct {
	HitsTotal        *prometheus.CounterVec
	MissesTotal      *prometheus.CounterVec
	InvalidatesTotal *prometheus.CounterVec
}

func NewCacheMetrics(subsystem string) *CacheMetrics {
	labelNames := []string{
		"service",
	}
	metrics := &CacheMetrics{
		HitsTotal: prometheus.NewCounterVec(prometheus.CounterOpts{
			Subsystem: subsystem,
			Name:      "cache_hits_total",
			Help:      "Количество попаданий в кэш.",
		}, labelNames),
		MissesTotal: prometheus.NewCounterVec(prometheus.CounterOpts{
			Subsystem: subsystem,
			Name:      "cache_misses_total",
			Help:      "Количество пропусков в кэш.",
		}, labelNames),
		InvalidatesTotal: prometheus.NewCounterVec(prometheus.CounterOpts{
			Subsystem: subsystem,
			Name:      "cache_invalidates_total",
			Help:      "Количество инвалидаций кэша.",
		}, labelNames),
	}
	prometheus.MustRegister(
		metrics.HitsTotal,
		metrics.MissesTotal,
		metrics.InvalidatesTotal,
	)
	return metrics
}