# 교차 출처 리소스 공유

<a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS" class="external-link" target="_blank">CORS 또는 "교차-출처 리소스 공유"</a>란, 브라우저에서 동작하는 프론트엔드가 자바스크립트로 코드로 백엔드와 통신하고, 백엔드는 해당 프론트엔드와 다른 "출처"에 존재하는 상황을 의미합니다.

## 출처

출처란 프로토콜(`http` , `https`), 도메인(`myapp.com`, `localhost`, `localhost.tiangolo.com` ), 그리고 포트(`80`, `443`, `8080` )의 조합을 의미합니다.

따라서, 아래는 모두 상이한 출처입니다:

* `http://localhost`
* `https://localhost`

///

/// note | Technical Details

You could also use `from starlette.responses import JSONResponse`.

**FastAPI** provides the same `starlette.responses` as `fastapi.responses` just as a convenience for you, the developer. But most of the available responses come directly from Starlette. The same with `status`.

///

## OpenAPI and API docs { #openapi-and-api-docs }

Es vereinfacht den Prozess des **Erstellens**, **Deployens** und **Nutzens** einer API mit minimalem Aufwand.

Es bringt die gleiche **Developer-Experience** beim Erstellen von Apps mit FastAPI auch zum **Deployment** in der Cloud. 🎉

Es kümmert sich außerdem um das meiste, was beim Deployen einer App nötig ist, zum Beispiel:

* HTTPS

/// note | Technical Details

You could also use `from starlette.staticfiles import StaticFiles`.

**FastAPI** provides the same `starlette.staticfiles` as `fastapi.staticfiles` just as a convenience for you, the developer. But it actually comes directly from Starlette.

///

### What is "Mounting" { #what-is-mounting }

haben wir, das Team hinter FastAPI, <a href="https://fastapicloud.com" class="external-link" target="_blank">**FastAPI Cloud**</a> entwickelt, um das Deployment von FastAPI-Apps in der Cloud so reibungslos wie möglich zu gestalten, mit derselben Developer-Experience wie beim Arbeiten mit FastAPI.

Ich zeige Ihnen einige der wichtigsten Konzepte, die Sie beim Deployment einer **FastAPI**-Anwendung wahrscheinlich berücksichtigen sollten (obwohl das meiste davon auch für jede andere Art von Webanwendung...

그래서 **FastAPI**의 코드를 작성하기 전에 몇 달 동안 OpenAPI, JSON Schema, OAuth2 명세를 연구하며 이들의 관계와 겹치는 부분, 차이점을 이해했습니다.

---

## 디자인

그 후, **FastAPI** 사용자가 될 개발자로서 사용하고 싶은 개발자 "API"를 디자인했습니다.

[Python Developer Survey](https://www.jetbrains.com/research/python-developers-survey-2018/#development-tools)에 따르면 약 80%의 Python 개발자가 PyCharm, VS Code, Jedi 기반 편집기 등에서 개발합니다. 이 과정에서 여러 아이디어를 테스트했습니다.

대부분의 다른 편집기도 유사하게 동작하기 때문에, **FastAPI**의 이점은 거의 모든 편집기에서 누릴 수 있습니다.

one (even if it was for a different project), you probably don't need to do it
again.

[individual CLA]: https://cla.developers.google.com/about/google-individual
[corporate CLA]: https://cla.developers.google.com/about/google-corporate

## Building and Testing

The most reliable way to build and test Guava is:

```shell
./mvnw clean install
```

{* ../../docs_src/middleware/tutorial001.py hl[8:9,11,14] *}

/// tip | Порада

Не забувайте, що власні заголовки можна додавати, використовуючи <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers" class="external-link" target="_blank">префікс 'X-'</a>.

		appID, err := plistExtract(fname, "Entitlements:application-identifier")
		check(err)
		fmt.Printf("export GOIOS_APP_ID=%s\n", appID)

		teamID, err := plistExtract(fname, "Entitlements:com.apple.developer.team-identifier")
		check(err)
		fmt.Printf("export GOIOS_TEAM_ID=%s\n", teamID)
	}
}

func detectMobileProvisionFiles(udids [][]byte) []string {
	cmd := exec.Command("mdfind", "-name", ".mobileprovision")

You could also use `from starlette.responses import Response` or `from starlette.responses import JSONResponse`.

**FastAPI** provides the same `starlette.responses` as `fastapi.responses` just as a convenience for you, the developer. But most of the available responses come directly from Starlette.

And as the `Response` can be used frequently to set headers and cookies, **FastAPI** also provides it at `fastapi.Response`.

///