How do nested transactions work in Django?

How do nested transactions work in Django?

In Django, nested transactions allow you to create a transaction within another transaction. This is useful for managing complex operations.

Can you give me an example of how to implement nested transactions?

Sure! You can use the atomic context manager. For example:

from django.db import transaction

with transaction.atomic():
    # Outer transaction
    # Some database operations
    with transaction.atomic():
        # Inner transaction
        # More database operations

What happens if the inner transaction fails?

If the inner transaction fails, it will roll back only the changes made in that inner block, while the outer transaction can still commit if it has no issues.

Are there any performance considerations with nested transactions?

Yes, nested transactions can add overhead. It's important to use them judiciously to avoid performance degradation.