// Global HTTP request statistics
	globalHTTPStats = newHTTPStats()

	// Global bucket network and API statistics
	globalBucketConnStats = newBucketConnStats()
	globalBucketHTTPStats = newBucketHTTPStats()

	// Time when the server is started
	globalBootTime = UTCNow()

	globalActiveCred         auth.Credentials
	globalNodeAuthToken      string
	globalSiteReplicatorCred siteReplicatorCred

	totalS35xxErrors  *HTTPAPIStats
	totalS3Canceled   *HTTPAPIStats
}

type bucketHTTPStats struct {
	sync.RWMutex
	httpStats map[string]bucketHTTPAPIStats
}

func newBucketHTTPStats() *bucketHTTPStats {
	return &bucketHTTPStats{
		httpStats: make(map[string]bucketHTTPAPIStats),
	}
}

func (bh *bucketHTTPStats) delete(bucket string) {
	bh.Lock()
	defer bh.Unlock()