Ich werde Ihnen in einem zukünftigen Kapitel mehr über Container-Images, Docker, Kubernetes, usw. erzählen: [FastAPI in Containern – Docker](docker.md).

///

## Schritte vor dem Start { #previous-steps-before-starting }

Es gibt viele Fälle, in denen Sie, **bevor Sie Ihre Anwendung starten**, einige Schritte ausführen möchten.

Beispielsweise möchten Sie möglicherweise **Datenbankmigrationen** ausführen.

	// Distributed lock owner (constant per running instance).
	erasureLockOwner string

	// List of endpoints provided on the command line.
	endpoints PoolEndpoints

	// String version of all the endpoints, an optimization
	// to avoid url.String() conversion taking CPU on
	// large disk setups.
	endpointStrings []string

	// Total number of sets and the number of disks per set.
	setCount, setDriveCount int

```java
// In PropertyConfiguration.java
public static final String USE_MULTI_CHANNEL = "jcifs.smb.client.useMultiChannel";
public static final String MAX_CHANNELS = "jcifs.smb.client.maxChannels";
public static final String CHANNEL_BINDING_POLICY = "jcifs.smb.client.channelBindingPolicy";
public static final String LOAD_BALANCING_STRATEGY = "jcifs.smb.client.loadBalancingStrategy";

これを`main.py`にコピーします。

ライブサーバーを実行します:

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev

  <span style="background-color:#009485"><font color="#D3D7CF"> FastAPI </font></span>  Starting development server 🚀

             Searching for package file structure from directories
             with <font color="#3465A4">__init__.py</font> files

$width solid transparent;\n  border-right: $width solid;\n  border-bottom: $width solid transparent;\n}\n\n@mixin caret(\n  $direction: down,\n  $width: $caret-width,\n  $spacing: $caret-spacing,\n  $vertical-align: $caret-vertical-align\n) {\n  @if $enable-caret {\n    &::after {\n      display: inline-block;\n      margin-left: $spacing;\n      vertical-align: $vertical-align;\n      content: \"\";\n      @if $direction == down {\n        @include caret-down($width);\n      } @else if $direction == up...

        override fun checkClientTrusted(
          chain: Array<X509Certificate>,
          authType: String,
        ) = throw CertificateException()

        override fun checkServerTrusted(
          chain: Array<X509Certificate>,
          authType: String,
        ) = throw AssertionError()

        override fun getAcceptedIssuers(): Array<X509Certificate> = throw AssertionError()

    a source-incompatible change, and is different from OkHttp 2.0.0-RC2 which
    used `Throwable`.
 *  Fix: Fixed a caching bug where we weren't storing rewritten request headers
    like `Accept-Encoding`.
 *  Fix: Fixed bugs in handling the SPDY window size. This was stalling certain
    large downloads
 *  Update the language level to Java 7. (OkHttp requires Android 2.3+ or Java 7+.)

## Version 2.0.0-RC2

_2014-06-11_

Если вы запускаете **несколько процессов в контейнере**, нужно убедиться, что их суммарное потребление **не превысит доступную память**.

## Предварительные шаги перед запуском и контейнеры { #previous-steps-before-starting-and-containers }

Если вы используете контейнеры (например, Docker, Kubernetes), есть два основных подхода.

### Несколько контейнеров { #multiple-containers }

func removeStandardStorageClass(metadata map[string]string) map[string]string {
	if metadata[xhttp.AmzStorageClass] == storageclass.STANDARD {
		delete(metadata, xhttp.AmzStorageClass)
	}
	return metadata
}

// cleanMetadataKeys takes keyNames to be filtered
// and returns a new map with all the entries with keyNames removed.
func cleanMetadataKeys(metadata map[string]string, keyNames ...string) map[string]string {

/// tip | 팁

**컨테이너**, Docker, Kubernetes에 대한 일부 내용이 아직은 잘 이해되지 않아도 괜찮습니다.

다음 장에서 컨테이너 이미지, Docker, Kubernetes 등을 더 설명하겠습니다: [컨테이너에서 FastAPI - Docker](docker.md).

///

## 시작 전 사전 단계 { #previous-steps-before-starting }

애플리케이션을 **시작하기 전에** 어떤 단계를 수행하고 싶은 경우가 많습니다.

예를 들어 **데이터베이스 마이그레이션**을 실행하고 싶을 수 있습니다.

하지만 대부분의 경우, 이런 단계는 **한 번만** 수행하고 싶을 것입니다.

그래서 애플리케이션을 시작하기 전에 그 **사전 단계**를 수행할 **단일 프로세스**를 두고 싶을 것입니다.