globalDomainIPs   set.StringSet // Root domain IP address(s) for a distributed MinIO deployment

	globalOperationTimeout       = newDynamicTimeout(10*time.Minute, 5*time.Minute) // default timeout for general ops
	globalDeleteOperationTimeout = newDynamicTimeout(5*time.Minute, 1*time.Minute)  // default time for delete ops

	globalBucketObjectLockSys *BucketObjectLockSys
	globalBucketQuotaSys      *BucketQuotaSys

)

const (
	jwtAlgorithm = "Bearer"

	// Default JWT token for web handlers is one day.
	defaultJWTExpiry = 24 * time.Hour

	// Inter-node JWT token expiry is 15 minutes.
	defaultInterNodeJWTExpiry = 15 * time.Minute
)

var (
	errInvalidAccessKeyID = errors.New("The access key ID you provided does not exist in our records")
	errAccessKeyDisabled  = errors.New("The access key you provided is disabled")

	// 		// ReadIdleTimeout is the timeout after which a health check using ping
	// 		// frame will be carried out if no frame is received on the
	// 		// connection. 5 minutes is sufficient time for any idle connection.
	// 		trhttp2.ReadIdleTimeout = 5 * time.Minute
	// 		// PingTimeout is the timeout after which the connection will be closed
	// 		// if a response to Ping is not received.
	// 		trhttp2.PingTimeout = dialTimeout

	pluginAuthnServiceLastFailSeconds      = "plugin_authn_service_last_fail_seconds"
	pluginAuthnServiceLastSuccSeconds      = "plugin_authn_service_last_succ_seconds"
	pluginAuthnServiceSuccAvgRttMsMinute   = "plugin_authn_service_succ_avg_rtt_ms_minute"
	pluginAuthnServiceSuccMaxRttMsMinute   = "plugin_authn_service_succ_max_rtt_ms_minute"

	// By default, empty data usage cache
	*d = dataUsageCache{}

	load := func(name string, timeout time.Duration) (bool, error) {
		// Abandon if more than time.Minute, so we don't hold up scanner.
		// drive timeout by default is 2 minutes, we do not need to wait longer.
		ctx, cancel := context.WithTimeout(ctx, timeout)
		defer cancel()

	writeTotal        MetricName = "write_total"
	total             MetricName = "total"
	freeInodes        MetricName = "free_inodes"

	lastMinFailedCount  MetricName = "last_minute_failed_count"
	lastMinFailedBytes  MetricName = "last_minute_failed_bytes"
	lastHourFailedCount MetricName = "last_hour_failed_count"
	lastHourFailedBytes MetricName = "last_hour_failed_bytes"
	totalFailedCount    MetricName = "total_failed_count"

	loadNodesUpDown := func() (v nodesOnline, err error) {
		v.Online, v.Offline = globalNotificationSys.GetPeerOnlineCount()
		return
	}
	return cachevalue.NewFromFunc(1*time.Minute,
		cachevalue.Opts{ReturnLastGood: true},
		loadNodesUpDown)
}

type driveIOStatMetrics struct {
	readsPerSec    float64
	readsKBPerSec  float64
	readsAwait     float64
	writesPerSec   float64

| `minio_cluster_replication_last_minute_failed_bytes`       | Total number of bytes failed at least once to replicate in the last full minute.                         |
| `minio_cluster_replication_last_minute_failed_count`       | Total number of objects which failed replication in the last full minute.                                |

	case "fast":
		cfg.Delay, cfg.MaxWait, cfg.Cycle = 1, 100*time.Millisecond, time.Minute
	case "default":
		cfg.Delay, cfg.MaxWait, cfg.Cycle = 2, time.Second, time.Minute
	case "slow":
		cfg.Delay, cfg.MaxWait, cfg.Cycle = 10, 15*time.Second, time.Minute
	case "slowest":
		cfg.Delay, cfg.MaxWait, cfg.Cycle = 100, 15*time.Second, 30*time.Minute
	default:
		return cfg, fmt.Errorf("unknown '%s' value", speed)
	}

	})
	t.Run("testServerOutCongestion", func(t *testing.T) {
		defer timeout(1 * time.Minute)()
		testServerOutCongestion(t, local, remote)
		assertNoActive(t, connRemoteLocal)
		assertNoActive(t, connLocalToRemote)
	})
	t.Run("testServerInCongestion", func(t *testing.T) {
		defer timeout(1 * time.Minute)()
		testServerInCongestion(t, local, remote)
		assertNoActive(t, connRemoteLocal)