### Dependency Injection

FastAPI bao gồm một hệ thống <abbr title='cũng biết đến như là "components", "resources", "services", "providers"'><strong>Dependency Injection</strong></abbr> vô cùng dễ sử dụng nhưng vô cùng mạnh mẽ.

- If `PreBindPreFlight` returned `Skip`, the scheduler didn't run the plugin at `PreBind`.
  If any `PreBindPreFlight` returned `Success`, the scheduler put NominatedNodeName to the pod 
  so that other components (such as the cluster autoscaler) could notice the pod was going to be bound to the node. ([#133021](https://github.com/kubernetes/kubernetes/pull/133021), [@sanposhiho](https://github.com/sanposhiho)) [SIG Scheduling and Testing]

flag --port=0 to kube-controller-manager and kube-scheduler manifests to disable insecure serving. Without this flag the components by default serve (e.g. /metrics) insecurely on the default node interface (controlled by --address). Users that wish to override this behavior and enable insecure serving can pass a custom --port=X via kubeadm's "extraArgs" mechanic for these components. ([#92720](https://github.com/kubernetes/kubernetes/pull/92720), [@neolit123](https://github.com/neolit123)) [SIG Cluster...

    private Postbox postbox;

    @Override
    public void setUp() throws Exception {
        super.setUp();
        crawler = new Crawler();

        // Initialize mock components
        searchEngineClient = new SearchEngineClient() {
            // Mock implementation
        };
        crawler.searchEngineClient = searchEngineClient;

        webFsIndexHelper = new WebFsIndexHelper() {

- Added to `MutableFeatureGate` the ability to override the default setting of feature gates, to allow default-enabling a feature on a component-by-component basis instead of for all affected components simultaneously. ([#122647](https://github.com/kubernetes/kubernetes/pull/122647), [@benluddy](https://github.com/benluddy))

### Deploy a more secure control plane with kubeadm

    private UrlFilter urlFilter;
    private StandardCrawlerContainer container;

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        // Initialize container with necessary components
        container = new StandardCrawlerContainer().singleton("dataHelper", MemoryDataHelper.class)
                .singleton("urlFilterService", UrlFilterServiceImpl.class)

    * Esta extensión SNI permite que un solo servidor (con una **sola dirección IP**) tenga **varios certificados HTTPS** y sirva **múltiples dominios/aplicaciones HTTPS**.
    * Para que esto funcione, un componente (programa) **único** que se ejecute en el servidor, escuchando en la **dirección IP pública**, debe tener **todos los certificados HTTPS** en el servidor.

#### Figure 2 - KMS key hierarchy

```
                                                          CMK (master key)

    private TestServletContext testServletContext;

    @Override
    public void setUp() throws Exception {
        super.setUp();
        pythonJob = new PythonJob();

        // Setup test components
        testProcessHelper = new TestProcessHelper();
        ComponentUtil.register(testProcessHelper, "processHelper");

        testFessConfig = new TestFessConfig() {
            @Override