User blog comment:TOR/Caching Explained/@comment-227438-20130328154130/@comment-3335785-20130328162040

Templates are another issue although they're much easier to solve. If you change a template the edit might take a little while to show up. You might see a similar issue if a template transcludes a category or image and it still shows up on Special:WhatLinksHere. Such issues are simply solved by editing the page and hitting save without making any changes. If I come up against a file someone has tagged for deletion but is still apparently used, I run AWB to simply add a newline at the end of the page, as null edits won't save. It does the same as a null edit (the line isn't added) and it rebuilds the page cache.

Alternatively, you can add ?action=purge to the end of the URL, although this doesn't purge the page for all users as discovered during the DPL issues a couple of weeks ago.