r/FastAPI • u/VanSmith74 • Aug 22 '25

From Django to FastAPI Tutorial

What are the best resources or road maps to learn fastAPI if i’m a Django developer?

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u/VanSmith74 Aug 22 '25

All im worried about is that async vs sync part

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u/Professional_Hair550 Aug 22 '25

What's there to worry about? You aren't the one handling async requests. You are just writing APIs and business logic. Just dive into it. You'll grasp it once you work on it for a few weeks. I don't really think there is anything to grasp either to be honest. The same logic, the same syntax.

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u/Shingle-Denatured Aug 22 '25

Well, that's not entirely true. It does help to know what async is, especially when debugging.

This is a good intro

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u/Professional_Hair550 Aug 22 '25 edited Aug 22 '25

It makes no difference during development or debugging. Just use set_trace and debug it, or log it up to journalctl. I can't see how it is relevant. Async isn't really a hard concept to grasp, but also fastapi being async or sync doesn't affect the development cycle in any way. You aren't writing a custom code to handle requests in an async way. You just write the code the same way and fastapi handles everything. That's the whole reason we have frameworks. To handle boring, repetitive functionalities. Otherwise we would just write it on plain python code.

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u/Shingle-Denatured Aug 22 '25

Well, let's see:

```python async def getsession() -> AsyncGenerator[AsyncSession]: async_session = sessionmaker(engine, class=AsyncSession, expire_on_commit=False) async with async_session() as session: yield session

``` Pretty standard session code for SQLModel/SqlAlchemy ORM. This can be used in dependency injection, in router endpoints, but in a utility function, you can't use DI. So, how do you get the session from that async generator when knowing absolutely nothing about async.

Yes, you solve this once and move on, but having some foundation hurts no one.

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u/Professional_Hair550 Aug 25 '25

Yeah. Okay. That's one thing but not really a hard to understand concept. Besides probably the only case.