What is the difference between Django transactions and savepoints?

What is the difference between Django transactions and savepoints?

Django transactions are used to ensure that a series of database operations are executed as a single unit. If any operation fails, the entire transaction can be rolled back. Savepoints, on the other hand, allow you to set a point within a transaction to which you can roll back without affecting the entire transaction.

Can you give me an example of how to use savepoints in Django?

Sure! You can use savepoints in Django like this:

from django.db import transaction

with transaction.atomic():
    # Some database operations
    savepoint = transaction.savepoint()
    try:
        # More operations that might fail
    except:
        savepoint.rollback()  # Roll back to the savepoint
    else:
        savepoint.commit()  # Commit the operations if successful

When should I use savepoints instead of just transactions?

Use savepoints when you have a large transaction with multiple operations, and you want to handle failures for specific parts without rolling back the entire transaction. This can improve performance and reduce data loss.