About the Template Fragment Caching without Invalidation
In a list view, if you make the fragment cache based on the modified_at date, you don't need to invalidate cache on post save. It will just create a new cache entry next time you access it after a save, and the old cache entries will expire after a timeout.
{% load cache %}
{% for post in page_obj %}
{% cache 86400 post_list_item post.pk post.modified_at request.LANGUAGE_CODE %}
{% include "posts/includes/post_list_item.html" %}
{% endcache %}
{% endfor %}
Tips and Tricks Programming Templates Caching Django 6.x Django 5.2 Django 4.2 Memcached Redis Cache
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