}

    /**
     * Provides a hint for how many values will be associated with each key newly added to the
     * builder after this call. This does not change semantics, but may improve performance if
     * {@code expectedValuesPerKey} is a good estimate.
     *
     * <p>This may be called more than once; each newly added key will use the most recent call to

     * manage that 4 byte header specifically and therefore the initial
     * bufferIndex, and thus headerStart, would be 4).(NOTE: If one where
     * looking for a way to improve perfomance this is precisly what you
     * would want to do as the jcifs.netbios.SocketXxxputStream classes
     * arraycopy all data read or written into a new buffer shifted over 4!)
     */

### <a href="https://www.django-rest-framework.org/" class="external-link" target="_blank">Django REST Framework</a>

Django REST framework was created to be a flexible toolkit for building Web APIs using Django underneath, to improve its API capabilities.

It is used by many companies including Mozilla, Red Hat and Eventbrite.

- Improves performance of the node authorizer ([#87696](https://github.com/kubernetes/kubernetes/pull/87696), [@liggitt](https://github.com/liggitt)) [SIG Auth]

- Improve speed of vSphere PV provisioning and reduce number of API calls ([#102350](https://github.com/kubernetes/kubernetes/pull/102350), [@gnufied](https://github.com/gnufied)) [SIG Cloud Provider and Storage]

* vSphere Kube-up: resolve vm-names on all nodes ([#35365](https://github.com/kubernetes/kubernetes/pull/35365), [@kerneltime](https://github.com/kerneltime))
* Improve source IP preservation test, fail the test instead of panic. ([#34030](https://github.com/kubernetes/kubernetes/pull/34030), [@MrHohn](https://github.com/MrHohn))

Just avoiding the copy of files doesn't necessarily improve things too much, but because it used the cache for that step, it can **use the cache for the next step**. For example, it could use the cache for the instruction that installs dependencies with:

```Dockerfile

href="https://anyio.readthedocs.io/en/stable/" class="external-link" target="_blank">AnyIO</a> to be highly compatible and get its benefits (e.g. *structured concurrency*).

I created another library on top of AnyIO, as a thin layer on top, to improve a bit the type annotations and get better **autocompletion**, **inline errors**, etc. It also has a friendly introduction and tutorial to help you **understand** and write **your own async code**: <a href="https://asyncer.tiangolo.com/" class="external-link"...

//	w.importDir["vendor/golang.org/x/net/route"] = "<goroot>/src/vendor/golang.org/x/net/route"
//
// Since the set of packages that exist depends on context, the result of
// loadImports also depends on context. However, to improve test running time
// the configuration for each environment is cached across runs.
func (w *Walker) loadImports() {
	if w.context == nil {
		return // test-only Walker; does not use the import map
	}

## Changelog since v1.22.14

## Changes by Kind

### Bug or Regression