如何在Django中使cache_page无效？ [英] How to invalidate cache_page in Django?

问题描述

问题出在这里：我有博客应用，并且将帖子输出视图缓存了5分钟。

Here is the problem: I have blog app and I cache the post output view for 5 minutes.

@cache_page(60 * 5)
def article(request, slug):
    ...

但是，只要将新评论添加到帖子中，我都想使缓存无效。
我想知道如何做到最好？

However, I'd like to invalidate the cache whenever a new comment is added to the post. I'm wondering how best to do so?

我见过，但是已经过时了。

I've seen this related question, but it is outdated.

推荐答案

我将以某种不同的方式进行缓存：

I would cache in a bit different way:

def article(request, slug):
    cached_article = cache.get('article_%s' % slug)
    if not cached_article:
        cached_article = Article.objects.get(slug=slug)
        cache.set('article_%s' % slug, cached_article, 60*5)

    return render(request, 'article/detail.html', {'article':cached_article})

然后将新注释保存到本文对象：

then saving the new comment to this article object:

# ...
# add the new comment to this article object, then
if cache.get('article_%s' % article.slug): 
    cache.delete('article_%s' % article.slug)
# ...

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