!!! tip
    Integrating other authentication/authorization providers like Google, Facebook, Twitter, GitHub, etc. is also possible and relatively easy.

    The most complex problem is building an authentication/authorization provider like those, but **FastAPI** gives you the tools to do it easily, while doing the heavy lifting for you.

## **FastAPI** utilities

Some course providers ✨ [**sponsor FastAPI**](../help-fastapi.md#sponsor-the-author){.internal-link target=_blank} ✨, this ensures the continued and healthy **development** of FastAPI and its **ecosystem**.

* Ein sehr leistungsfähiges und einfach zu bedienendes System für **<abbr title="Dependency Injection – Einbringen von Abhängigkeiten: Auch bekannt als Komponenten, Ressourcen, Provider, Services, Injectables">Dependency Injection</abbr>**.
* Sicherheit und Authentifizierung, einschließlich Unterstützung für **OAuth2** mit **JWT-Tokens** und **HTTP-Basic**-Authentifizierung.

* Як встановити **перевірку обмежень** як `maximum_length` або `regex`.
* Дуже потужна і проста у використанні система **<abbr title="також відома як: components, resources, providers, services, injectables">Ін'єкція Залежностей</abbr>**.
* Безпека та автентифікація, включаючи підтримку **OAuth2** з **JWT tokens** та **HTTP Basic** автентифікацію.

* `maximum_length` ya da `regex` gibi **doğrulama kısıtlamalarının** nasıl yapılabileceği.
* Çok güçlü ve kullanımı kolay **<abbr title="Bağımlılık Enjeksiyonu: components, resources, providers, services, injectables olarak da biliniyor.">Bağımlılık Enjeksiyonu</abbr>** sistemi oluşturmayı.
* Güvenlik ve kimlik doğrulama, **JWT tokenleri** ile **OAuth2** desteği, ve **HTTP Basic** doğrulaması.

**🚘 🚨**: 🔰 - 👩‍💻 🦮 🔌:

* 📄 **🔢** ⚪️➡️ 🎏 🎏 🥉: **🎚**, **🍪**, **📨 🏑** & **📁**.
* ❔ ⚒ **🔬 ⚛** `maximum_length` ⚖️ `regex`.
* 📶 🏋️ &amp; ⏩ ⚙️ **<abbr title="also known as components, resources, providers, services, injectables">🔗 💉</abbr>** ⚙️.
* 💂‍♂ &amp; 🤝, ✅ 🐕‍🦺 **Oauth2️⃣** ⏮️ **🥙 🤝** &amp; **🇺🇸🔍 🔰** 🔐.
* 🌅 🏧 (✋️ 😨 ⏩) ⚒ 📣 **🙇 🐦 🎻 🏷** (👏 Pydantic).

# Abhängigkeiten

**FastAPI** hat ein sehr mächtiges, aber intuitives **<abbr title="Dependency Injection – Einbringen von Abhängigkeiten: Auch bekannt als Komponenten, Ressourcen, Provider, Services, Injectables">Dependency Injection</abbr>** System.

Es ist so konzipiert, sehr einfach zu verwenden zu sein und es jedem Entwickler sehr leicht zu machen, andere Komponenten mit **FastAPI** zu integrieren.

## Was ist „Dependency Injection“

### Interactive API docs

Now go to <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.

You will see the automatic interactive API documentation (provided by <a href="https://github.com/swagger-api/swagger-ui" class="external-link" target="_blank">Swagger UI</a>):

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-01-swagger-ui-simple.png)

### Alternative API docs

To **deploy** an application means to perform the necessary steps to make it **available to the users**.

For a **web API**, it normally involves putting it in a **remote machine**, with a **server program** that provides good performance, stability, etc, so that your **users** can **access** the application efficiently and without interruptions or problems.

* چگونگی تنظیم **<abbr title="Validation Constraints">محدودیت‌های اعتبارسنجی</abbr>** به عنوان مثال `maximum_length` یا `regex`.
* سیستم **<abbr title="also known as components, resources, providers, services, injectables">Dependency Injection</abbr>** قوی و کاربردی.
* امنیت و تایید هویت, شامل پشتیبانی از **OAuth2** مبتنی بر **JWT tokens** و **HTTP Basic**.
* تکنیک پیشرفته برای تعریف **مدل‌های چند سطحی JSON** (بر اساس Pydantic).