此解决方案适用于1.7之前的Django版本

这是我写的一种解决方案，用于执行你在自己的一些项目中正在谈论的事情：

def expire_view_cache(view_name, args=[], namespace=None, key_prefix=None):
    """
    This function allows you to invalidate any view-level cache. 
        view_name: view function you wish to invalidate or it's named url pattern
        args: any arguments passed to the view function
        namepace: optioal, if an application namespace is needed
        key prefix: for the @cache_page decorator for the function (if any)
    """
    from django.core.urlresolvers import reverse
    from django.http import HttpRequest
    from django.utils.cache import get_cache_key
    from django.core.cache import cache
    # create a fake request object
    request = HttpRequest()
    # Loookup the request path:
    if namespace:
        view_name = namespace + ":" + view_name
    request.path = reverse(view_name, args=args)
    # get cache key, expire if the cached item exists:
    key = get_cache_key(request, key_prefix=key_prefix)
    if key:
        if cache.get(key):
            # Delete the cache entry.  
            #
            # Note that there is a possible race condition here, as another 
            # process / thread may have refreshed the cache between
            # the call to cache.get() above, and the cache.set(key, None) 
            # below.  This may lead to unexpected performance problems under 
            # severe load.
            cache.set(key, None, 0)
        return True
    return False

Django会为视图请求的这些缓存设置密钥，因此该操作是为缓存的视图创建一个伪造的请求对象，并使用该对象来获取缓存密钥，然后使其过期。

要以你正在谈论的方式使用它，请尝试以下操作：

from django.db.models.signals import post_save
from blog.models import Entry

def invalidate_blog_index(sender, **kwargs):
    expire_view_cache("blog")

post_save.connect(invalidate_portfolio_index, sender=Entry)

因此，基本上，只要保存了Blog Entry对象，就会调用invalidate_blog_index，并且缓存的视图也会过期。注意：尚未对此进行广泛测试，但到目前为止对我来说还不错。