What is eager loading in Flask ORM?

What is eager loading in Flask ORM?

Eager loading is a technique used in Flask ORM to load related data at the same time as the main query, reducing the number of database calls.

Why is eager loading important?

It's important because it improves performance by minimizing the number of queries, which can significantly speed up data retrieval.

Can you give an example of how to implement eager loading?

Sure! In Flask-SQLAlchemy, you can use the joinedload option to eagerly load related objects. For example: session.query(User).options(joinedload(User.posts)).all().

Are there any downsides to using eager loading?

Yes, if you load too much data at once, it can lead to increased memory usage and slower performance. It's important to balance eager loading with your application's needs.