I'm using the bulk_create method from Django to create many entries at once.

To ensure that the changes are only committed if there is no exception I'm thinking about adding transaction.atomic() to the code blocks but I'm not sure if I need to add it.

From my understanding I only need to add it in Scenario 2 because in this case I'm executing more than one query.

Scenario 1

Create 1.000 entries in one query

Entry.objects.bulk_create([
    Entry(headline='This is a test'),
    Entry(headline='This is only a test'),
    # ...
])

Scenario 2

Create 10.000 entries in in batches of 1.000

Entry.objects.bulk_create([
    Entry(headline='This is a test'),
    Entry(headline='This is only a test'),
    # ...
], batch_size=1_000)