FastAPI and Async Operations
Understand how FastAPI naturally handles asynchronous functions and how to write efficient non-blocking code.
FastAPI's Async Foundation
FastAPI is built for speed! It leverages Python's asynchronous features to handle many requests concurrently, especially I/O-bound tasks.
This means your API can stay responsive even when waiting for external resources like databases or other APIs.
Sync vs. Async Endpoints
In FastAPI, you can define two main types of endpoint functions:
- Synchronous (
def): These functions block the event loop while they run. If one request takes long, others might wait. - Asynchronous (
async def): These functions can 'pause' and let other tasks run while they await an operation (like reading from a database), making your API non-blocking.
All lessons in this course
- Async/Await in Python Refresher
- FastAPI and Async Operations
- Executing Background Tasks
- WebSockets for Real-Time Communication