How do I expire a django template cache key on receiving a signal?

Question

In my front page template I use the cache function like this:

{% cache 86400 my_posts %}
    {% get_latest_posts %}
{% endcache %}

When there i

Answer 1

from django.core.cache import cache
from django.core.cache.utils import make_template_fragment_key

cache.delete(make_template_fragment_key('footer'))