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Part of the bootcamp
Introduction to FastAPI is one workshop inside Backend Engineer Bootcamp: Go from Zero to Hero.
See the full path with mentor reviews and a portfolio outcome.
Stop writing single-file toy APIs. Learn the project layout, the Pydantic type contracts, and the lifespan pattern that working FastAPI services actually use.
Engineers are learning here from
Scaffold a production-shaped FastAPI service with typed endpoints, Pydantic request and response models, and a lifespan that loads a model once. Learn the layout, the type contracts, and the running story end to end.
Build a production-shaped FastAPI service with typed endpoints, Pydantic models, and a lifespan that loads a model once.
What you'll ship
What you'll learn
Curriculum
Why FastAPI
See why typed Python changes the API story, tour the framework, and learn the project layout you will use all course
Your first endpoints
Write typed GET and POST routes with Pydantic bodies, response models, and HTTPException
Type contracts with Pydantic
Build rich Pydantic models with fields, defaults, response coercion, nested types, and Optional
Lifespan and dependencies
Load expensive clients once in a lifespan, share them with Depends, and offload work with BackgroundTasks
Running it
Run the service locally with uvicorn, expose auto-docs, add CORS, and package it with Docker
Who it's for
who want to build real HTTP services without fighting Flask boilerplate
moving to typed Python and curious how FastAPI compares to Django
who need a production shape to wrap their model code behind an API
FAQ
No. The course introduces async def and await where it matters, and explains when sync is perfectly fine.
FastAPI gives you typed request and response contracts, auto-generated OpenAPI docs, and native async support without extra plugins. The course explains the tradeoff in the first lesson.
No. The service pattern is generic. The lifespan example uses an LLM client because that is a common real-world case, but the same shape works for any expensive resource.
The shape of a good service does not go out of date. Start here.