Для примера, посмотрите [Project Generators](../project-generation.md){.internal-link target=_blank}, там есть проект с уже настроенным Celery.

                    // generated, which requires a container source to be provided. Without a facade class, function IR symbols will have
                    // an `IrExternalPackageFragment` parent, which trips up code generation during IR lowering.
                    val psiSourceFile =
                        descriptor.toSourceElement.containingFile as? PsiSourceFile ?: return super.getContainerSource(descriptor)

它们往往需要更复杂的配置，即消息/作业队列管理器，如RabbitMQ或Redis，但它们允许您在多个进程中运行后台任务，甚至是在多个服务器中。

要查看示例，查阅 [Project Generators](../project-generation.md){.internal-link target=_blank}，它们都包括已经配置的Celery。

但是，如果您需要从同一个**FastAPI**应用程序访问变量和对象，或者您需要执行小型后台任务（如发送电子邮件通知），您只需使用 `BackgroundTasks` 即可。

## 回顾

* Add a **JSON Schema** for the response, in the OpenAPI *path operation*.
    * This will be used by the **automatic docs**.
    * It will also be used by automatic client code generation tools.

But most importantly:

* It will **limit and filter** the output data to what is defined in the return type.
    * This is particularly important for **security**, we'll see more of that below.

There are a few ways to prevent these:
* Only pass in to the generation logic the cache key itself, so no other unaccounted inputs can be used. Unfortunately, this has not been done for any generators today.
* Be very, very careful.

	Destination(string) SecretItemBuilder
	State(string) SecretItemBuilder
	Build() (SecretItem, error)
}

// secretItemBuilder implements SecretItemBuilder, and acts as an intermediate before SecretItem generation
type secretItemBuilder struct {
	name   string
	data   string
	source string
	dest   string
	state  string
	SecretMeta
}

// Name sets the name field on a secretItemBuilder

	}
	var nonce [32]byte
	if _, err := io.ReadFull(random, nonce[:]); err != nil {
		logger.CriticalIf(context.Background(), errOutOfEntropy)
	}

	const Context = "object-encryption-key generation"
	mac := hmac.New(sha256.New, extKey)
	mac.Write([]byte(Context))
	mac.Write(nonce[:])
	mac.Sum(key[:0])
	return key
}

// GenerateIV generates a new random 256 bit IV from the provided source

To see an example, check the [Project Generators](../project-generation.md){.internal-link target=_blank}, they all include Celery already configured.

  // +kubebuilder:validation:Required
  // +kubebuilder:validation:Enum=True;False;Unknown
  optional string status = 2;

  // observedGeneration represents the .metadata.generation that the condition was set based upon.
  // For instance, if .metadata.generation is currently 12, but the .status.conditions[x].observedGeneration is 9, the condition is out of date
  // with respect to the current state of the instance.
  // +optional

RabbitMQ 또는 Redis와 같은 메시지/작업 큐 시스템 보다 복잡한 구성이 필요한 경향이 있지만, 여러 작업 프로세스를 특히 여러 서버의 백그라운드에서 실행할 수 있습니다.

예제를 보시려면 [프로젝트 생성기](../project-generation.md){.internal-link target=\_blank} 를 참고하세요. 해당 예제에는 이미 구성된 `Celery`가 포함되어 있습니다.

그러나 동일한 FastAPI 앱에서 변수 및 개체에 접근해야햐는 작은 백그라운드 수행이 필요한 경우 (예 : 알림 이메일 보내기) 간단하게 `BackgroundTasks`를 사용해보세요.

## 요약