[英]Facebook, stop caching a page, how to?
Lets say, I have an article which supposed to be shown next week, for an hour. 可以说,我有一篇文章应该在下周播放一个小时。 When viewing this article, it defends itself:
查看本文时,它会为自己辩护:
if ($post->date < NEXT WEEK || $post->date > NEXT WEEK)
{
header("HTTP/1.1 301 Moved Permanently");
header('Location: http://example.com/404');
exit();
}
this works very good but sadly a sitemap is working around here or whatever. 效果很好,但遗憾的是,站点地图正在此处或附近运行。 Facebook still caches that 404 page.
Facebook仍会缓存该404页面。 How to ask facebook not to cache that page?
如何要求Facebook不缓存该页面?
Add follow strings: 添加跟随字符串:
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Expires: " . date("r"));
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