This module provides a django QuerySet subclass that attempts to filter in-memory, without hitting the database. This is useful in cases where a dataset is accessed multiple times in a view via related objects: rather than querying the database once for each related object, pull the entire table into memory and filter from there.
Use CacheManager as the default manager for the models you wish to filter in memory:
from cachedqueryset import CacheManager
class MyModel(models.Model):
objects = CacheManager()
Then, in your view, use the load_cache method to load all objects into memory:
def my_view(request):
MyModel.objects.load_cache()
This is rough around the edges and could use some proper testing. Feel free to contribute ;)
Copyright © 2011 Omar Khan, released under the MIT licence.