About Invalidating Django Template Fragment Cache
You can invalidate template fragment cache made with {% cache %} template filter using the following utility function:
def invalidate_template_fragment_cache(fragment_name, *vary_on):
from django.core.cache import cache
from django.core.cache.utils import make_template_fragment_key
cache_key = make_template_fragment_key(fragment_name, vary_on)
cache.delete(cache_key)
So if you have a template snippet like this:
{% load cache %}
{% cache 600 salutation request.user %}
<h1>Hello, {{ request.user.first_name }} {{ request.user.last_name }}!</h1>
{% endcache %}
And that user changes their name and you want to invalidate cache and show the new name, you would:
invalidate_template_fragment_cache("salutation", user)
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