/// tip | Совет

Не беспокойтесь, если некоторые пункты про **контейнеры**, Docker или Kubernetes пока кажутся неочевидными.

Я расскажу больше про образы контейнеров, Docker, Kubernetes и т.п. в следующей главе: [FastAPI внутри контейнеров — Docker](docker.md){.internal-link target=_blank}.

///

## Предварительные шаги перед запуском { #previous-steps-before-starting }

/// note | Detalhes Técnicos

A imagem Docker foi criada quando o Uvicorn não suportava gerenciar e reiniciar workers mortos, então era necessário usar o Gunicorn com o Uvicorn, o que adicionava bastante complexidade, apenas para que o Gunicorn gerenciasse e reiniciasse os processos workers do Uvicorn.

/// tip | Dica

Não se preocupe se alguns desses itens sobre **contêineres**, Docker ou Kubernetes ainda não fizerem muito sentido.

Falarei mais sobre imagens de contêiner, Docker, Kubernetes, etc. em um capítulo futuro: [FastAPI em contêineres - Docker](docker.md){.internal-link target=_blank}.

///

## Etapas anteriores antes de começar { #previous-steps-before-starting }

/// tip

これらの**コンテナ**やDockerそしてKubernetesに関する項目が、まだあまり意味をなしていなくても心配しないでください。
<!-- NOTE: the current version of docker.md is outdated compared to English one. -->

コンテナ・イメージ、Docker、Kubernetesなどについては、次の章で詳しく説明します: [コンテナ内のFastAPI - Docker](docker.md){.internal-link target=_blank}.

///

## 開始前の事前のステップ

	workerSize, err := strconv.Atoi(env.Get("_MINIO_BATCH_EXPIRATION_WORKERS", strconv.Itoa(runtime.GOMAXPROCS(0)/2)))
	if err != nil {
		return err
	}

	wk, err := workers.New(workerSize)
	if err != nil {
		// invalid worker size.
		return err
	}

	ctx, cancelCause := context.WithCancelCause(ctx)
	defer cancelCause(nil)

	results := make(chan itemOrErr[ObjectInfo], workerSize)
	go func() {

   * cache size. The application needs to be aware of calling this function during the
   * initialization phase and preferably in a background worker thread.
   *
   * Note that if the application chooses to not call this method to initialize the cache. By
   * default, OkHttp will perform lazy initialization upon the first usage of the cache.
   */

   *
   * <p>{@linkplain Executor#execute executed} tasks have a happens-before order as defined in the
   * Java Language Specification. Tasks execute with the same happens-before order that the function
   * calls to {@link Executor#execute execute()} that submitted those tasks had.
   *
   * <p>The executor uses {@code delegate} in order to {@link Executor#execute execute} each task in

      <version>1.3.0</version>
    </dependency>
    ```

 *  **Fix: improve parallelism of async requests.** OkHttp's Dispatcher had a
    misconfigured `ExecutorService` that limited the number of worker threads.
    If you're using `Call.enqueue()` this update should significantly improve
    request concurrency.

 *  **Fix: Lazily initialize the response cache.** This avoids strict mode

    - kubeadm: implemented CRI detection for Windows worker nodes ([#78053](https://github.com/kubernetes/kubernetes/pull/78053), [@ksubrmnn](https://github.com/ksubrmnn))

## コンテナ・イメージ

Dockerは、**コンテナ・イメージ**と**コンテナ**を作成・管理するための主要なツールの1つです。

そして、DockerにはDockerイメージ（コンテナ）を共有する<a href="https://hub.docker.com/" class="external-link" target="_blank">Docker Hub</a>というものがあります。

Docker Hubは 多くのツールや環境、データベース、アプリケーションに対応している予め作成された**公式のコンテナ・イメージ**をパブリックに提供しています。

例えば、公式イメージの1つに<a href="https://hub.docker.com/_/python" class="external-link" target="_blank">Python Image</a>があります。