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I've been waiting a long time to write about this. Johnny Cache is now released upon the world. It's a drop-in caching library/framework for Django that will cache all of your querysets forever in a consistent and safe manner. You can install it via pip install johnny-cache.
A friend and colleague Jeremy Self, who I've been working with the past few weeks on a project that will probably be released shortly, told me the interesting results of some profiling he was doing on a lazy-evaluated data structure:
As mentioned in yet-unresolved #7835, I've been writing a sort of meta-application recently that doesn't provide any models of its own but absolutely requires models (and data) of various types to test against. I ended up adopting julien's technique, which puts the test-only application inside the tests module, and then overrides setUp and tearDown to monkey patch your settings to include the test-only application and then run a syncdb command. This approach started out working very well, but I soon ran into a fairly major problem: fixtures failed to load.
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