#### kube-apiserver:
- in an `--encryption-provider-config` config file, an explicit `cacheSize: 0` parameter previously silently defaulted to caching 1000 keys. In Kubernetes 1.18, this now returns a config validation error. To disable caching, you can specify a negative cacheSize value in Kubernetes 1.18+.

- The nftables mode of kube-proxy is now GA. (The iptables mode remains the
  default; you can select the nftables mode by passing `--proxy-mode nftables`
  or using a config file with `mode: nftables`. See the kube-proxy documentation

<code>g</code> are equal in number and individually
assignable to the parameters of another function or method
<code>f</code>, then the call <code>f(g(<i>parameters_of_g</i>))</code>
will invoke <code>f</code> after passing the return values of
<code>g</code> to the parameters of <code>f</code> in order.
The call of <code>f</code> must contain no parameters other than the call of <code>g</code>,

      status->status = InvalidArgument("Unparseable RunOptions proto");
      return;
    }
    if (run_metadata != nullptr && run_metadata->data != nullptr) {
      status->status =
          InvalidArgument("Passing non-empty run_metadata is invalid.");
      return;
    }

    RunMetadata run_metadata_proto;
    result = session->Run(run_options_proto, input_pairs, output_tensor_names,

_endpoint_context_cache: dict[int, EndpointContext] = {}


def _extract_endpoint_context(func: Any) -> EndpointContext:
    """Extract endpoint context with caching to avoid repeated file I/O."""
    func_id = id(func)

    if func_id in _endpoint_context_cache:
        return _endpoint_context_cache[func_id]

    try:
        ctx: EndpointContext = {}

- Improving the performance of Endpoint and EndpointSlice controllers by caching Service Selectors ([#84280](https://github.com/kubernetes/kubernetes/pull/84280), [@gongguan](https://github.com/gongguan))

  }

  /**
   * Returns the specified comparator if not null; otherwise returns {@code Ordering.natural()}.
   * This method is an abomination of generics; the only purpose of this method is to contain the
   * ugly type-casting in one place.
   */
  @SuppressWarnings("unchecked")
  static <E extends @Nullable Object> Comparator<? super E> orNaturalOrder(
      @Nullable Comparator<? super E> comparator) {

  }

  /**
   * Returns the specified comparator if not null; otherwise returns {@code Ordering.natural()}.
   * This method is an abomination of generics; the only purpose of this method is to contain the
   * ugly type-casting in one place.
   */
  @SuppressWarnings("unchecked")
  static <E extends @Nullable Object> Comparator<? super E> orNaturalOrder(
      @Nullable Comparator<? super E> comparator) {

// https://www.iana.org/domains/root/db/firmdale.html
firmdale

// fish : Binky Moon, LLC
// https://www.iana.org/domains/root/db/fish.html
fish

// fishing : Registry Services, LLC
// https://www.iana.org/domains/root/db/fishing.html
fishing

// fit : Registry Services, LLC
// https://www.iana.org/domains/root/db/fit.html
fit

// fitness : Binky Moon, LLC

* AWS: Remove duplicate calls to DescribeInstance during volume operations ([#39842](https://github.com/kubernetes/kubernetes/pull/39842), [@gnufied](https://github.com/gnufied))
* Caching added to the OIDC client auth plugin to fix races and reduce the time kubectl commands using this plugin take by several seconds. ([#38167](https://github.com/kubernetes/kubernetes/pull/38167), [@ericchiang](https://github.com/ericchiang))