When an artist is in the news (e.g. because they died), their Wikipedia article is usually quickly updated, but the MB website still shows an outdated extract that was cached before.

MediaWiki, e.g., allows any user to remove a page from its cache by adding ?action=purge to the URL (documentation). We could provide something like a /wikipedia-extract/purge endpoint (should probably RequireAuth and either add a link to it somewhere in the sidebar or leave it as a hidden feature.