/** Property key for Google Chat webhook URLs configuration. */
    public static final String GOOGLE_CHAT_WEBHOOK_URLS_PROPERTY = "google.chat.webhook.urls";

    /** Property key for browser locale usage in search configuration. */
    public static final String USE_BROWSER_LOCALE_FOR_SEARCH_PROPERTY = "search.use.browser.locale";

    // ============================================================

- kubeadm: removed preflight check for `ip`, `iptables`, `ethtool` and `tc` on Linux nodes. 
kubelet and kube-proxy will continue to report `iptables` errors if its usage is required. The tools `ip`, `ethtool` and `tc` had legacy usage in the kubelet but are no longer required. ([#129131](https://github.com/kubernetes/kubernetes/pull/129131), [@pacoxu](https://github.com/pacoxu)) [SIG Cluster Lifecycle]

- Fixed a potential deadlock in the resource quota controller. Enabled recording partial usage info for quota objects specifying multiple resources, when only some of the resources' usage can be determined. ([#74747](https://github.com/kubernetes/kubernetes/pull/74747), [@liggitt](https://github.com/liggitt))

collection algorithm. As a result, we observed an increase in memory usage for kube-apiserver in larger an heavily loaded clusters up to ~25% (with the benefit of API call latencies drop by up to 10x on 99th percentiles). If the memory increase is not acceptable for you you can mitigate by setting GOGC env variable (for our tests using GOGC=63 brings memory usage back to original value, although the exact value may depend on usage patterns on your cluster). ([#108870](https://github.com/kubernetes...

- Fixed a bug where the Kubelet miscalculated the process usage of pods, causing pods to never get evicted for PID usage. ([#124101](https://github.com/kubernetes/kubernetes/pull/124101), [@haircommander](https://github.com/haircommander)) [SIG Node and Testing]

 * </ul>
 *
 * <p>These features are all optional; caches can be created using all or none of them. By default,
 * cache instances created by {@code CacheBuilder} will not perform any type of eviction.
 *
 * <p>Usage example:
 *
 * {@snippet :
 * LoadingCache<Key, Graph> graphs = CacheBuilder.newBuilder()
 *     .maximumSize(10000)
 *     .expireAfterWrite(Duration.ofMinutes(10))
 *     .removalListener(MY_LISTENER)

value":""}]},"batch":{"_":[{"key":"replication_workers_wait","value":"0ms"},{"key":"keyrotation_workers_wait","value":"0ms"},{"key":"expiration_workers_wait","value":"0ms"}]},"browser":{"_":[{"key":"csp_policy","value":"default-src 'self' 'unsafe-eval' 'unsafe-inline';"},{"key":"hsts_seconds","value":"0"},{"key":"hsts_include_subdomains","value":"off"},{"key":"hsts_preload","value":"off"},{"key":"referrer_policy","value":"strict-origin-when-cross-origin"}]},"cache":{"_":[{"key":"enable","value":...

		VersionID:    strings.TrimSpace(r.Form.Get(xhttp.VersionID)),
	}

	return logger.SetReqInfo(r.Context(), reqInfo)
}

// Used for registering with rest handlers (have a look at registerStorageRESTHandlers for usage example)
// If it is passed ["aaaa", "bbbb"], it returns ["aaaa", "{aaaa:.*}", "bbbb", "{bbbb:.*}"]
func restQueries(keys ...string) []string {
	var accumulator []string
	for _, key := range keys {

- Added memory tracking to scheduler performance tests to help detect memory leaks and monitored memory usage patterns while running `scheduler_perf`. ([#132910](https://github.com/kubernetes/kubernetes/pull/132910), [@utam0k](https://github.com/utam0k)) [SIG Scheduling and Testing]

* removed unsafe double RLock in cpumanager ([#62464](https://github.com/kubernetes/kubernetes/pull/62464), [@choury](https://github.com/choury))