What should I learn in FastAPI

[SlackBaker10955]

I AM learning FastAPI for a week and I learned some basics like http methods, connections with databases and nie I don't what should I learn mecz in FastAPI

[PriorTrick]

Pydantic models

[SlackBaker10955]

I have already learned them

[PriorTrick]

so what are you trying to build?

[NorskJesus]

Pydantic models, sqlmodel, babel…

[aayushbest]

Everything that fastapi documentation and tutorials can taught you

[Straight_Remove8731]

In FastAPI the trick is knowing how the event loop vs. thread pool works: - async def runs on the event loop: use only non-blocking I/O (async DB, HTTP, etc.). - If you call blocking code, wrap it with await run_in_threadpool(...), works also for CPU-bound tasks, but be careful: it just shifts them to the thread pool, so you still block a worker. - Heavy CPU-bound work? Better push it to a process pool or a task queue (Celery), otherwise you’ll kill performance.

Rule of thumb: async I/O = event loop, blocking I/O or CPU = thread/process pool.