rtt

type Recorder interface {
	Snapshot(key string, past time.Duration) *Statistics
	RecordLatency(key string, latency float64)
	RecordSent(key string)
	RecordLost(key string)
	Drop(key string)
}

type Statistics struct {
	Since             time.Time     `json:"since"`
	Until             time.Time     `json:"until"`
	Min               time.Duration `json:"min"`
	Average           time.Duration `json:"average"`
	Max               time.Duration `json:"max"`
	StandardDeviation time.Duration `json:"mdev"`
	Sent              uint64        `json:"sent"`
	Lost              uint64        `json:"lost"`
}