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FastAPI
Core details
Title
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Description
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FastAPI is a modern Python web framework for APIs, based on Starlette and Pydantic, emphasizing speed, async support, and auto-generated docs with OpenAPI. It's ideal for data/ML-heavy backends.
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Usage & Trade-offs
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When to use it
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Use FastAPI when: - Building async APIs with Python. - Needing auto Swagger docs. - Validating with Pydantic models. - High-perf ML endpoints.
Pros
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- Blazing fast (uvicorn + ASGI). - Type hints for validation/docs. - Dependency injection. - WebSockets support. - Easy testing.
Cons
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- Async learning curve. - Smaller than Django ecosystem. - Deployment quirks (gunicorn).
Notes
Note: Use Depends for DI. Run with uvicorn --reload. Integrate SQLAlchemy async.
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