metrics

type LabelHash struct {
	// This is a hash over the label names
	Names NameHash
	// This is a hash over the label names + label values
	Values ValueHash
}

type Metric struct {
	MetricType MetricType
	// Vectors key is the hash of the label names
	Vectors map[NameHash]*Vector
	// Metrics key is a hash of the label names + label values
	Metrics map[ValueHash]*RegisteredMetric
}

type MetricHolder interface{}

type MetricType int

type NameHash uint64

type RegisteredMetric struct {
	LastRegisteredAt time.Time
	Labels           prometheus.Labels
	TTL              time.Duration
	Metric           MetricHolder
	VecKey           NameHash
}

type ValueHash uint64

type Vector struct {
	Holder   VectorHolder
	RefCount uint64
}

type VectorHolder interface {
	Delete(label prometheus.Labels) bool
}