RefreshSpecial
From MediaWiki Beginners Wiki
RefreshSpecial is an extension that can refresh the cached (saved) information for pages on the Special:SpecialPages.
Ordinarily, this isn't a problem, as these pages will update automatically on their own by default. However, if the pages update slowly due to being on a poorly performing server or your wiki is really big, this extension can force a data refresh.
This extension can be rather useful if you want to keep all the Special Page data current.