- A new feature was enabled to improve the performance of the iptables mode of `kube-proxy` in large clusters. No action was required, however:
  

- Kube-proxy, when using a Service with External or LoadBalancer IPs on UDP services , was consuming a large amount of CPU because it was not filtering by the Service destination port and trying to delete all the UDP entries associated to the service. ([#130505](https://github.com/kubernetes/kubernetes/pull/130505), [@aojea](https://github.com/aojea)) [SIG...

- Improved performance of `Endpoint` and `EndpointSlice` controllers when there are a large number of services in a single namespace by making pod-to-service lookup asynchronous. ([#134739](https://github.com/kubernetes/kubernetes/pull/134739), [@shyamjvs](https://github.com/shyamjvs)) [SIG Apps and Network]

    }
    source.close()
  }

  /** Confirm that an unacknowledged write times out.  */
  @Test
  fun writeTimeouts() {
    val server = MockWebServer()
    // Sockets on some platforms can have large buffers that mean writes do not block when
    // required. These socket factories explicitly set the buffer sizes on sockets created.
    val socketBufferSize = 4 * 1024
    server.serverSocketFactory =

- Fixed bug in reflector that couldn't recover from "Too large resource version" errors with API servers 1.17.0-1.18.5 ([#94316](https://github.com/kubernetes/kubernetes/pull/94316), [@janeczku](https://github.com/janeczku)) [SIG API Machinery]

:= signPKCS1v15(k, "SHA-256", hash) if err != nil { return err } return verifyPKCS1v15(k.PublicKey(), "SHA-256", hash, sig) }) } return k, nil } } // errDivisorTooLarge is returned by [totient] when gcd(p-1, q-1) is too large. var errDivisorTooLarge = errors.New("divisor too large") // totient computes the Carmichael totient function λ(N) = lcm(p-1, q-1). func totient(p, q *bigmod.Modulus) (*bigmod.Modulus, error) { a, b := p.Nat().SubOne(p), q.Nat().SubOne(q) // lcm(a, b) = a×b / gcd(a, b) = a ×...

:= signPKCS1v15(k, "SHA-256", hash) if err != nil { return err } return verifyPKCS1v15(k.PublicKey(), "SHA-256", hash, sig) }) } return k, nil } } // errDivisorTooLarge is returned by [totient] when gcd(p-1, q-1) is too large. var errDivisorTooLarge = errors.New("divisor too large") // totient computes the Carmichael totient function λ(N) = lcm(p-1, q-1). func totient(p, q *bigmod.Modulus) (*bigmod.Modulus, error) { a, b := p.Nat().SubOne(p), q.Nat().SubOne(q) // lcm(a, b) = a×b / gcd(a, b) = a ×...

- Fixed API response for `StorageClassList` queries to return a graceful error message, if the provided `ResourceVersion` is too large. ([#132374](https://github.com/kubernetes/kubernetes/pull/132374), [@PatrickLaabs](https://github.com/PatrickLaabs)) [SIG API Machinery and Etcd]

* Never prevent deletion of resources as part of namespace lifecycle ([#48733](https://github.com/kubernetes/kubernetes/pull/48733), [@liggitt](https://github.com/liggitt))
* AWS cloudprovider plugin: Fix for large clusters (200+ nodes). Also fix bug with volumes not getting detached from a node after reboot. ([#48312](https://github.com/kubernetes/kubernetes/pull/48312), [@gnufied](https://github.com/gnufied))

- KCCM: fixed transient node addition and removal caused by #121090 while syncing load balancers on large clusters with a lot of churn. ([#121091](https://github.com/kubernetes/kubernetes/pull/121091), [@alexanderConstantinescu](https://github.com/alexanderConstantinescu))