What are the differences between async and sync in Flask?

What are the differences between async and sync in Flask?

In Flask, synchronous code runs in a single thread, blocking other requests until it's done. Asynchronous code, on the other hand, allows multiple requests to be handled concurrently, improving performance for I/O-bound tasks.

Can you give me an example of when to use async?

Sure! Use async in Flask when you're dealing with tasks like making API calls or database queries that can take time. This way, your app can handle other requests while waiting for those tasks to complete.

What are the challenges of using async in Flask?

Some challenges include complexity in code structure, potential for race conditions, and the need for compatible libraries that support async operations.

Is it possible to mix async and sync code in a Flask app?

Yes, you can mix async and sync code, but you need to be careful about how they interact, especially regarding blocking calls in async functions.