django-cached-counts 0.2.1

Caching count() in django models

Usage

from django_cached_counts import CachedCount

class MyModel(models.Model):
    bar = models.ManyToManyField(Bar)
    foo_count = CachedCount("foo_set", filter=Q(foo__x__gte=10))
    total_user_count = CachedCount(User.objects.all())
    m2m_count = CachedCount('bar_set')

class Foo(models.Model):
    mymodel = models.ForeignKey(MyModel)

Those counts would be cached and invalidated when models Foo or User are saved/deleted