[RESOLVED] Forcing a refresh AFTER a page has been cached

[pdmmidd]

Does anyone know any tricks to force a page to refresh AFTER it has been cached by the browser?

My web page has been live for a month. It features dynamic content that changes daily. I have only just applied the "no-cache" meta tags to force all future visits to retrieve the new content.

However, how do I force previous visitors who are viewing a cached page, to go out and retrieve the new file (with the new meta tags) ???

Any ideas?

[Kravvitz]

You would need to use HTTP Response headers.
http://www.simtec.ltd.uk/httpgallery/caching/

[pdmmidd]

Thanks for the detail. This will resolve the issue for future visitors to the page. Is there anything I can do about previous visitors who have already cached the page without this header info?

[Kravvitz]

No, the server needs to use the HTTP Headers to tell the user's browser that it needs to download a new copy of the page (file). That's how HTTP works. I doubt there is another way to do it.