/**
     * Directory cache timeout in milliseconds
     */
    protected long directoryCacheTimeout = 30000L;
    /**
     * Whether directory change notifications are enabled for cache invalidation
     */
    protected boolean directoryNotificationsEnabled = true;
    /**
     * Maximum number of cached directory entries
     */
    protected int maxDirectoryCacheEntries = 1000;

    which returns the privately domain name if the URL has one.
 *  Fix: Change `MediaType.charset()` to return null for unexpected charsets.
 *  Fix: Don't skip cache invalidation if the invalidating response has no body.
 *  Fix: Don't use a cryptographic random number generator for web sockets. Some Android devices
    implement `SecureRandom` incorrectly!

	dependGlobalBackgroundHealState bool
	dependBucketTargetSys           bool
}

// RegisterRead register the metrics populator function to be used
// to populate new values upon cache invalidation.
func (g *MetricsGroupV2) RegisterRead(read func(context.Context) []MetricV2) {
	g.metricsCache = cachevalue.NewFromFunc(g.cacheInterval,
		cachevalue.Opts{ReturnLastGood: true},

  
  ### Azure
  - Add optional jitter on initial VMSS VM cache refresh, keep the refreshes spread over time
  - Serve from cache for the whole period of ongoing throttling
  - Fix unwanted VMSS VMs cache invalidation
  - Enforce setting the number of retries if cloud provider backoff is enabled
  - Don't update capacity if VMSS provisioning state is updating
  - Support allocatable resources overrides via VMSS tags