*/
public interface Configuration {

    /**
     * 
     * @return random source to use
     */
    SecureRandom getRandom ();


    /**
     * 
     * 
     * Property <tt>jcifs.smb.client.dfs.ttl</tt> (int, default 300)
     * 
     * @return title to live, in seconds, for DFS cache entries
     */
    long getDfsTtl ();


    /**
     * 

public class AzureAdAuthenticator implements SsoAuthenticator {

    private static final Logger logger = LogManager.getLogger(AzureAdAuthenticator.class);

    protected static final String AZUREAD_STATE_TTL = "aad.state.ttl";

    protected static final String AZUREAD_AUTHORITY = "aad.authority";

    protected static final String AZUREAD_TENANT = "aad.tenant";

    protected static final String AZUREAD_CLIENT_SECRET = "aad.client.secret";

                                    path:
                                      description: Path to set for the cookie.
                                      type: string
                                    ttl:
                                      description: Lifetime of the cookie.
                                      type: string
                                  required:
                                  - name

                type: boolean
              minimumTtl:
                description: 'For multi hop sessions only: configure the minimum expected
                  TTL for an incoming BFD control packet.'
                format: int32
                maximum: 254
                minimum: 1
                type: integer
              passiveMode:

		metric.VariableLabels[k] = v
	}
	for k, v := range m.Histogram {
		metric.Histogram[k] = v
	}
	return metric
}

// Get - returns cached value always upton the configured TTL,
// once the TTL expires "read()" registered function is called
// to return the new values and updated.
func (g *MetricsGroupV2) Get() (metrics []MetricV2) {
	m, _ := g.metricsCache.Get()
	if len(m) == 0 {
		return []MetricV2{}

* Change the default kubeadm bootstrap token TTL from infinite to 24 hours. This is a breaking change. If you require the old behavior, use `kubeadm init --token-ttl 0` / `kubeadm token create --ttl 0`. ([#48783](https://github.com/kubernetes/kubernetes/pull/48783), [@mattmoyer](https://github.com/mattmoyer))

### Other notable changes

    * A new `k8s_external` plugin that allows external zones to point to Kubernetes in-cluster services.
    * CoreDNS now checks if a zone transfer is allowed. Also allow a TTL of 0 to avoid caching in the cache plugin.
    * TTL is also applied to negative responses (NXDOMAIN, etc).

- Azure VMSS/VMSSVM clients now suppress requests on throttling ([#86740](https://github.com/kubernetes/kubernetes/pull/86740), [@feiskyer](https://github.com/feiskyer)) [SIG Cloud Provider]
- Azure cloud provider cache TTL is configurable, list of the azure cloud provider is as following:
  - "availabilitySetNodesCacheTTLInSeconds"
  - "vmssCacheTTLInSeconds"
  - "vmssVirtualMachinesCacheTTLInSeconds"
  - "vmCacheTTLInSeconds"

- util/initsystem: Added support for the OpenRC init system ([#73101](https://github.com/kubernetes/kubernetes/pull/73101), [@oz123](https://github.com/oz123))
- Default TTL for DNS records in kubernetes zone has been changed from 5s to 30s to keep consistent with old dnsmasq based kube-dns. The TTL can be customized with command `kubectl edit -n kube-system configmap/coredns`. ([#76238](https://github.com/kubernetes/kubernetes/pull/76238), [@Dieken](https://github.com/Dieken))

  or `Secrets` when the `configMapAndSecretChangeDetectionStrategy` is set to `Cache`.
  The update interval is only affected by `node.alpha.kubernetes.io/ttl` node annotation." ([#120255](https://github.com/kubernetes/kubernetes/pull/120255), [@likakuli](https://github.com/likakuli))