Clearing specific cache in Django

Question

I am using view caching for a django project.

It says the cache uses the URL as the key, so I\'m wondering how to clear the cache of one of the keys if a user update

Answer 1

I make a function to delete key starting with some text. This help me to delete dynamic keys.

list posts cached

def get_posts(tag, page=1):
    cached_data = cache.get('list_posts_home_tag%s_page%s' % (tag, page))
    if not cached_data:
        cached_data = mycontroller.get_posts(tag, page)
        cache.set('list_posts_home_tag%s_page%s' % (tag, page), cached_data, 60)
    return cached_data

when update any post, call flush_cache

def update(data):
    response = mycontroller.update(data)
    flush_cache('list_posts_home')
    return response

flush_cache to delete any dynamic cache

def flush_cache(text):
    for key in list(cache._cache.keys()):
        if text in key:
            cache.delete(key.replace(':1:', ''))

Do not forget to import cache from django

from django.core.cache import cache