OrphanPodCleanedVolumesErrors = metrics.NewGauge(
		&metrics.GaugeOpts{
			Subsystem:      KubeletSubsystem,
			Name:           orphanPodCleanedVolumesErrorsKey,
			Help:           "The number of orphaned Pods whose volumes failed to be cleaned in the last periodic sweep.",
			StabilityLevel: metrics.ALPHA,
		},
	)

	NodeStartupPreKubeletDuration = metrics.NewGauge(
		&metrics.GaugeOpts{

			StabilityLevel: metrics.ALPHA,
		},
	)

	// SyncProxyRulesLastTimestamp is the timestamp proxy rules were last
	// successfully synced.
	SyncProxyRulesLastTimestamp = metrics.NewGauge(
		&metrics.GaugeOpts{
			Subsystem:      kubeProxySubsystem,
			Name:           "sync_proxy_rules_last_timestamp_seconds",
			Help:           "The last time proxy rules were successfully synced",

		"xds_cache_evictions",
		"Total number of xds cache evictions.",
		monitoring.WithEnabled(enableStats),
	)

	xdsCacheSize = monitoring.NewGauge(
		"xds_cache_size",
		"Current size of xds cache",
		monitoring.WithEnabled(enableStats),
	)

	dependentConfigSize = monitoring.NewGauge(
		"xds_cache_dependent_config_size",
		"Current size of dependent configs",
		monitoring.WithEnabled(enableStats),
	)

	keyIDHashStatusLastTimestampSecondsMetricLabels *lru.Cache
	cacheSize                                       = 100

	// This metric is only used for KMS v1 API.
	dekCacheFillPercent = metrics.NewGauge(
		&metrics.GaugeOpts{
			Namespace:      namespace,
			Subsystem:      subsystem,
			Name:           "dek_cache_fill_percent",
			Help:           "Percent of the cache slots currently occupied by cached DEKs.",

	"istio.io/istio/pkg/monitoring"
	"istio.io/istio/pkg/zdsapi"
)

var (
	ztunnelKeepAliveCheckInterval = 5 * time.Second
	readWriteDeadline             = 5 * time.Second
)

var ztunnelConnected = monitoring.NewGauge("ztunnel_connected",
	"number of connections to ztunnel")

type ZtunnelServer interface {
	Run(ctx context.Context)
	PodDeleted(ctx context.Context, uid string) error

		"Number of times remote clusters took too long to sync, causing slow startup that excludes remote clusters.",
	)

	clusterType = monitoring.CreateLabel("cluster_type")

	clustersCount = monitoring.NewGauge(
		"istiod_managed_clusters",
		"Number of clusters managed by istiod",
	)

	localClusters  = clustersCount.With(clusterType.Value("local"))
	remoteClusters = clustersCount.With(clusterType.Value("remote"))
)

			Name:           "target_seats",
			Help:           "Seat allocation targets",
			StabilityLevel: compbasemetrics.ALPHA,
		},
		[]string{priorityLevel},
	)
	apiserverFairFracs = compbasemetrics.NewGauge(
		&compbasemetrics.GaugeOpts{
			Namespace:      namespace,
			Subsystem:      subsystem,
			Name:           "seat_fair_frac",

	endpointsWithNoPods = monitoring.NewSum(
		"pilot_k8s_endpoints_with_no_pods",
		"Endpoints that does not have any corresponding pods.")

	endpointsPendingPodUpdate = monitoring.NewGauge(
		"pilot_k8s_endpoints_pending_pod",
		"Number of endpoints that do not currently have any corresponding pods.",
	)
)

// Options stores the configurable attributes of a Controller.
type Options struct {

                            // version but the restriction is identical
                            VersionRange newRange = previousRange.restrict(currentRange);
                            // TODO ick. this forces the OCE that should have come from the previous call. It is still
                            // correct
                            if (newRange.isSelectedVersionKnown(previous.getArtifact())) {
                                fireEvent(

	// Update a single field of the user and verify that the changed address is not stored.
	newAge := uint(100)
	user.Account.Number = "new_account_number"
	db := DB.Model(&user).UpdateColumns(User{Age: newAge})

	if db.RowsAffected != 1 {
		t.Errorf("Expected RowsAffected=1 but instead RowsAffected=%v", db.RowsAffected)
	}

	// Verify that Age now=`newAge`.
	result := &User{}
	result.ID = user.ID
	DB.Preload("Account").First(result)