Kulcs funkciók:

* **Gyors**: Nagyon nagy teljesítmény, a **NodeJS**-el és a **Go**-val egyenrangú (a Starlettenek és a Pydantic-nek köszönhetően). [Az egyik leggyorsabb Python keretrendszer](#performance).
* **Gyorsan kódolható**: A funkciók fejlesztési sebességét 200-300 százalékkal megnöveli. *
* **Kevesebb hiba**: Körülbelül 40%-al csökkenti az emberi (fejlesztői) hibák számát. *

* **Safer** types.
* Better **performance** and **less energy** consumption.
* Better **extensibility**.
* etc.

...all this while keeping the **same Python API**. In most of the cases, for simple models, you can simply upgrade the Pydantic version and get all the benefits. 🚀

In some cases, for pure data validation and processing, you can get performance improvements of **20x** or more. This means 2,000% or more. 🤯

Avec **FastAPI** vous aurez toutes les fonctionnalités de **Starlette** (FastAPI est juste Starlette sous stéroïdes):

* Des performances vraiment impressionnantes. C'est l'<a href="https://github.com/encode/starlette#performance" class="external-link" target="_blank">un des framework Python les plus rapide, à égalité avec **NodeJS** et **GO**</a>.
* Le support des **WebSockets**.
* Le support de **GraphQL**.

    family-names: Ramírez
    email: ******@****.***
identifiers:
repository-code: 'https://github.com/tiangolo/fastapi'
url: 'https://fastapi.tiangolo.com'
abstract: >-
  FastAPI framework, high performance, easy to learn, fast to code,
  ready for production
keywords:
  - fastapi
  - pydantic
  - starlette

---

FastAPI é um moderno e rápido (alta performance) _framework web_ para construção de APIs com Python, baseado nos _type hints_ padrões do Python.

Os recursos chave são:

* **Rápido**: alta performance, equivalente a **NodeJS** e **Go** (graças ao Starlette e Pydantic). [Um dos frameworks mais rápidos disponíveis](#performance).

With **FastAPI** you get all of **Starlette**'s features (as FastAPI is just Starlette on steroids):

* Seriously impressive performance. It is <a href="https://github.com/encode/starlette#performance" class="external-link" target="_blank">one of the fastest Python frameworks available, on par with **NodeJS** and **Go**</a>.
* **WebSocket** support.
* In-process background tasks.

    Hat eindeutig Uvicorn und Starlette inspiriert, welche derzeit in offenen Benchmarks schneller als Sanic sind.

!!! check "Inspirierte **FastAPI**"
    Einen Weg zu finden, eine hervorragende Performanz zu haben.

    Aus diesem Grund basiert **FastAPI** auf Starlette, da dieses das schnellste verfügbare Framework ist (getestet in Benchmarks von Dritten).

For production you would use `fastapi run` instead. 🚀

Internally, **FastAPI CLI** uses <a href="https://www.uvicorn.org" class="external-link" target="_blank">Uvicorn</a>, a high-performance, production-ready, ASGI server. 😎

## `fastapi dev`

When you run `fastapi dev`, it will run on development mode.

INHERIT: ../en/mkdocs.maybe-insiders.yml
site_name: FastAPI
site_description: FastAPI framework, high performance, easy to learn, fast to code, ready for production
site_url: https://fastapi.tiangolo.com/
theme:
  name: material
  custom_dir: ../en/overrides
  palette:
  - media: '(prefers-color-scheme: light)'
    scheme: default
    primary: teal
    accent: amber
    toggle:
      icon: material/lightbulb
      name: Switch to dark mode

Com **FastAPI**, você terá todos os recursos do **Starlette** (já que FastAPI é apenas um Starlette com esteróides):

* Desempenho realmente impressionante. É <a href="https://github.com/encode/starlette#performance" class="external-link" target="_blank">um dos _frameworks_ Python disponíveis mais rápidos, a par com o **NodeJS** e **Go**</a>.
* Suporte a **WebSocket**.
* Suporte a **GraphQL**.
* Tarefas em processo _background_.