Atomic operations in Django?

Question

I\'m trying to implement (what I think is) a pretty simple data model for a counter:

class VisitorDayTypeCounter(models.Model):
    visitType = models.CharFi         


        

Answer 1

You can use patch from http://code.djangoproject.com/ticket/2705 for support database level locking.

With patch this code will be atomic:

visitors = VisitorDayTypeCounter.objects.get(day=curday).for_update()
visitors.counter += 1
visitors.save()