- Clear pod binding cache on bind error to make sure stale pod binding cache will not be used. ([#71212](https://github.com/kubernetes/kubernetes/pull/71212), [@cofyc](https://github.com/cofyc))
- Fixed a scheduler panic due to internal cache inconsistency ([#71063](https://github.com/kubernetes/kubernetes/pull/71063), [@Huang-Wei](https://github.com/Huang-Wei))

- Fix the bug PIP's DNS is deleted if no DNS label service annotation isn't set. ([#87312](https://github.com/kubernetes/kubernetes/pull/87312), [@nilo19](https://github.com/nilo19)) [SIG Cloud Provider]
- Fix: set nil cache entry based on old cache ([#87591](https://github.com/kubernetes/kubernetes/pull/87591), [@aramase](https://github.com/aramase)) [SIG Cloud Provider]

* The following deprecated flags were removed from `kube-controller-manager`:

  * `replication-controller-lookup-cache-size`
  * `replicaset-lookup-cache-size`
  * `daemonset-lookup-cache-size`

  Don't use these flags. Using deprecated flags causes the server to print a warning. Using a removed flag causes the server to abort the startup.

  fstype: ext3
```

([#56147](https://github.com/kubernetes/kubernetes/pull/56147), [@andyzhangx](https://github.com/andyzhangx))

### Scheduling

* Fixed a bug the in scheduler cache by using Pod UID as the cache key instead of namespace/name ([#61069](https://github.com/kubernetes/kubernetes/pull/61069), [@anfernee](https://github.com/anfernee))

- To reduce chances of throttling, VM cache is set to nil when Azure node provisioning state is deleting ([#87635](https://github.com/kubernetes/kubernetes/pull/87635), [@feiskyer](https://github.com/feiskyer)) [SIG Cloud Provider]

- Fix the bug PIP's DNS is deleted if no DNS label service annotation isn't set. ([#87310](https://github.com/kubernetes/kubernetes/pull/87310), [@nilo19](https://github.com/nilo19)) [SIG Cloud Provider]
- Fix: set nil cache entry based on old cache ([#87593](https://github.com/kubernetes/kubernetes/pull/87593), [@aramase](https://github.com/aramase)) [SIG Cloud Provider]

* discovery.CachedDiscoveryInterface implementation returned by NewMemCacheClient has changed semantics of Invalidate method -- the cache refresh is now deferred to the first cache lookup. ([#70994](https://github.com/kubernetes/kubernetes/pull/70994), [@mborsz](https://github.com/mborsz))

- Added the `DetectCacheInconsistency` feature gate, allowing the API server to periodically verify consistency between its `cache` and `etcd`. Detected inconsistencies reported via the `apiserver_storage_consistency_checks_total` metric and trigger purging of affected cache snapshots. ([#132884](https://github.com/kubernetes/kubernetes/pull/132884), [@serathius](https://github.com/serathius)) [SIG API Machinery, Instrumentation and Testing]

  - *apiserver_cache_list_fetched_objects_total*: Counter of objects read from watch cache in the course of serving a LIST request, broken down by resource_prefix and index_name
  - *apiserver_cache_list_evaluated_objects_total*: Counter of objects tested in the course of serving a LIST request from watch cache, broken down by resource_prefix

### SIG Scheduling

- The equivalence class cache has been redesigned to be a two level cache, resulting in a significant increase in scheduling throughput and performance. ([#65714](https://github.com/kubernetes/kubernetes/pull/65714), [@resouer](https://github.com/resouer))