django-cachet

A collection of caching helpers for Django.

Template Tags

Django-cachet provides a template tag that is similar to Django's built-in cache template tag, but that derives the cache key from the actual content of the template. With this template tag, a timeout is optional. With specific enough keys, you don't need to expire your cache.

{% load cachet %}
{% cachet %}
  There are {{ expensive_query.count }} objects in the list.
{% endcachet %}

Just like the built-in cache template tag, you can pass in an optional timeout or variance keys as well, but the syntax is different.

{% cachet [timeout] [on *key_args] %}

The benefit of this approach over Django's is that when you modify the cached template fragment, the cache key will change, meaning that you can develop more easily without having to manually invalidate your cache. Essentially, the template fragment is content addressed. This also means that you don't need to expire your cache either.