问题
I just updated our site's <meta>'s open graph protocol. I just noticed that whenever I share some links, the old <meta> is the one being parsed by Facebook. However, to those links I run on debugger tool they show the updated <meta>. Is there a way to have Facebook recognized updated <meta> on all links aside from pasting it on debugger?
回答1:
When You update your <meta> (Open graph) tags and run it through the debugger You are updating and clearing Facebook servers cache, Not Yours!
Clear Your browser cache and you should see the updated <meta> tags
来源：https://stackoverflow.com/questions/19899697/facebook-reset-cache-on-share-on-facebook-links