}
	}
	return &m
}

// save in-memory stats to disk
func (sm *siteResyncMetrics) save(ctx context.Context) {
	sTimer := time.NewTimer(siteResyncSaveInterval)
	defer sTimer.Stop()
	for {
		select {
		case <-sTimer.C:
			if globalSiteReplicationSys.isEnabled() {
				sm.Lock()
				wg := sync.WaitGroup{}
				for dID, rs := range sm.peerResyncMap {