FastAPI has quickly become the framework of choice for building Python APIs. It combines the simplicity of Flask with the performance of Node.js, thanks to its async-first architecture built on Starlette and Pydantic.
Why FastAPI?
- Performance: On par with Go and Node.js for I/O-bound workloads
- Auto-docs: Swagger and ReDoc documentation generated automatically
- Type safety: Pydantic models provide runtime validation
- Async native: Full async/await support out of the box
Getting Started
A minimal FastAPI application is just a few lines of code, but the framework scales elegantly to complex, production-grade architectures with dependency injection, middleware, and background tasks.
