What is FastAPI? Nedir?

FastAPI was developed by Sebastian Ramirez in 2018. It uses Python 3.6+ type hints to create automatic validation, serialization, and API documentation. It's built on Starlette (ASGI framework) and Pydantic (data validation). FastAPI's most notable feature is automatically generating OpenAPI (Swagger) and ReDoc documentation from type hints. This speeds up the API development process and guarantees documentation stays synchronized with code. Async/await support provides high concurrency performance. FastAPI shows performance comparable to Node.js and Go in benchmark tests. Dependency injection system, security schemes (OAuth2, JWT), WebSocket support, and background tasks are included in the framework. Microsoft, Uber, Netflix, and Explosion AI use FastAPI. It has rapidly gained popularity particularly in serving machine learning models as APIs and in microservice architectures.

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