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Asked: 2026-06-12T18:08:56+00:00

I’m working on an app that requires me to filter through large amount of

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I’m working on an app that requires me to filter through large amount of records. I’ve been reading about caching QuerySets and related stuff and found some good material.

qs = MyModel.objects.filter(Q(<initial_filter_to_narrow_down_size>))

After this, I wish to put this qs in cache for later use. I want to apply all the other filters without hitting the database. something like

cache.set('qs', qs)

but what happens when I will do qs = qs.filter(q_object) ? Cache will be modified ? I don’t want that. I want qs to remain constant until I update it. What should I do in this case ?

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1 Answer

  1. Editorial Team

    .filter() clones the queryset before applying the filter. Cache will not be affected.

    BTW, you might want to check JohnnyCache … a great app about queryset caching.

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