### API Change

- Kubernetes 1.23 is now built with go1.19.4. To match behavior of previous Kubernetes 1.23 patch releases:
  - `kube-apiserver` defaults the GOGC setting to 63, to approximate go1.17 garbage collection memory performance in heavily loaded API servers

  }

  /**
   * Each OkHttpClient used to get its own instance of NullProxySelector, and because these weren't
   * equal their connections weren't pooled. That's a nasty performance bug!
   *
   * https://github.com/square/okhttp/issues/5519
   */
  @Test
  fun connectionPoolingWithFreshClientSamePool() {
    server.enqueue(MockResponse(body = "abc"))

    * handle gracefully problem when kubelet reports duplicated stats for the same container (see [#47853](https://github.com/kubernetes/kubernetes/pull/47853)) on Heapster side
    * fixed bugs and improved performance in Stackdriver Sink

* Resolves bottleneck in internal API server communication that can cause increased goroutines and degrade API Server performance ([#80465](https://github.com/kubernetes/kubernetes/pull/80465), [@answer1991](https://github.com/answer1991))

          <version>4.0.0+</version>
          <type>String</type>
          <description>
            Whether to load Maven extensions (such as packaging and type handlers) from
            this plugin. For performance reasons, this should only be enabled when necessary. Note: While the type
            of this field is {@code String} for technical reasons, the semantic type is actually
            {@code Boolean}. Default value is {@code false}.

* Upgrading Container-VM base image for k8s on GCE. Brief changelog as follows: ([#32738](https://github.com/kubernetes/kubernetes/pull/32738), [@Amey-D](https://github.com/Amey-D))
    * Fixed performance regression in veth device driver
    * Docker and related binaries are statically linked
    * Fixed the issue of systemd being oom-killable

- Improved scheduling performance when many nodes, and prefilter returned 1-2 nodes (e.g. daemonset)
  

mitigation to avoid disrupting load balancer → kube-apiserver connections if http/2 requests from multiple clients share the same backend connection. An API server on a private network may choose not to enable the kube-apiserver mitigation to prevent performance regressions for unauthenticated clients. Authenticated requests rely on the fix in golang.org/x/net v0.17.0 alone. https://issue.k8s.io/121197 tracks further mitigation of http/2 attacks by authenticated clients. ([#121200](https://github.com/k...

utilisateurs**.

Pour une **API Web**, cela implique normalement de la placer sur une **machine distante**, avec un **programme serveur**
qui offre de bonnes performances, une bonne stabilité, _etc._, afin que vos **utilisateurs** puissent **accéder** à
l'application efficacement et sans interruption ni problème.

- Fix performance issue when creating large objects using SSA with fully unspecified schemas (preserveUnknownFields). ([#111915](https://github.com/kubernetes/kubernetes/pull/111915), [@aojea](https://github.com/aojea)) [SIG API Machinery, Architecture, Auth, CLI,...