How should celery pick tasks from database

Question

I have python django web application. When user submits the request then i have to insert 10 rows in database , basically which are tasks that has to completed.

I can have function which gets those tasks and then celery can run those functions.

@shared_task
def provision(tasks):
    for tasks in tasks:
       pass

My problem is

1. Some tasks i want o happen in sequqnce after other
2. some tasks i want to happen in parallel
3. IN case some tasks failed then i should be able to restart them

I am not sure how will celery help me on this

Answer 1

The Celery framework provides some workflow primitives that allows you run tasks in sequence ( chain ) or in parallel ( group ).

Celery also comes with a built-in retry mechanism .