Clear cache when adding oneboxed URL to post

Product Support

AI-generated summary

When inserting a oneboxed URL into a post, the title may not update if the target page has changed. markwill found that clearing the browser cache and trying different sessions did not resolve the issue. According to Falco, oneboxing occurs server-side, making client-side cache clearing ineffective. A workaround is to add a query parameter to the URL, such as ?v=2, to bypass the cache. A utility or feature to refresh the cache, similar to Facebook’s debugger, is not available in Discourse.

1

When inserting a link into a new topic, how can I clear the cache when the target page has been updated?

I inserted a URL and noticed that the title of the page was incorrect. I fixed that on the page itself, but when I insert the URL again I am always getting the older title. Obviously this is cached somewhere but I am not sure where. I’ve done all the obvious stuff (cleared cache, incognito session, logged out/in, etc) but still pull in the older title.

I am wondering if this is analogous to when inserted into Facebook posts, where the same behavior exists (but I can easily fix with the Facebook debugger page, to refresh Facebook’s view of the link at the back end). Is there a similar option Discourse?

Thank you.

2

Onebox happens all server side so

won’t help you.

One easy way to bypass cache is to add a query parameter to the URL, like appending ?v=2 to end of it.

3

Yeah, I figured. I was hoping there was some utility/feature like the Facebook thing I mentioned but thanks for confirming.