* rate, and ability to be implemented with O(1) time complexity. The initial LRU implementation
   * operates per-segment rather than globally for increased implementation simplicity. We expect
   * the cache hit rate to be similar to that of a global LRU algorithm.
   */

  // Constants

  /**

- Increase timeout for pod lifecycle test to reach pod status=ready ([#96691](https://github.com/kubernetes/kubernetes/pull/96691), [@hh](https://github.com/hh))
- Increased `CSINodeIDMaxLength` from 128 bytes to 192 bytes. ([#98753](https://github.com/kubernetes/kubernetes/pull/98753), [@Jiawei0227](https://github.com/Jiawei0227))

New alpha features include:
* Online volume resizing will increase the filesystem size of a resized volume without requiring a Pod restart.
* AWS EBS and GCE PD volumes support increased limits on the maximum number of attached volumes per node.

- Introduce `v1beta3` API for scheduler. This version 
  - increases the weight of user specifiable priorities.
  The weights of following priority plugins are increased
    - `TaintTolerations` to 3 - as leveraging node tainting to group nodes in the cluster is becoming a widely-adopted practice
    - `NodeAffinity` to 2

* Increase Horizontal Pod Autoscaler default update interval (30s -> 15s). It will improve HPA reaction time for metric changes. ([#68021](https://github.com/kubernetes/kubernetes/pull/68021), [@krzysztof-jastrzebski](https://github.com/krzysztof-jastrzebski))

  public void testSetCount_threeToThree_unsupported() {
    try {
      assertThreeToThree();
    } catch (UnsupportedOperationException tolerated) {
    }
  }

  // Unconditional setCount size increases:

  @CollectionFeature.Require(SUPPORTS_ADD)
  public void testSetCount_zeroToOne_supported() {
    assertSetCount(e3(), 1);
  }

 - Windows containers  now honor CPU limits
 - Performance improvements for collections of metrics and summary

### Increase the Kubernetes support window to one year

As of Kubernetes 1.19, bugfix support via patch releases for a Kubernetes minor release has increased from 9 months to 1 year.

- Included the namespace in the output of `kubectl delete` for better identification of resources. ([#126619](https://github.com/kubernetes/kubernetes/pull/126619), [@totegamma](https://github.com/totegamma))
- Increased APF max seats to 100 for LIST requests. ([#133034](https://github.com/kubernetes/kubernetes/pull/133034), [@serathius](https://github.com/serathius))

* [alpha] Volume resizing

  * You can now increase the size of a volume by calling the Kubernetes API.

  * For alpha, this feature increases only the size of the underlying volume. It does not support resizing the file system.

  * For alpha, volume resizing supports only Gluster volumes.

  public void testSetCount_threeToThree_unsupported() {
    try {
      assertThreeToThree();
    } catch (UnsupportedOperationException tolerated) {
    }
  }

  // Unconditional setCount size increases:

  @CollectionFeature.Require(SUPPORTS_ADD)
  public void testSetCount_zeroToOne_supported() {
    assertSetCount(e3(), 1);
  }