Extension:CacheBreaker

CacheBreaker is an extension that automatically adds cache breaking URL pieces to media. (i.e., )

This is necessary because images and other media are cached by software separate from MediaWiki, and each cache entry is identified by its URL. is generally used to begin a query string within a URL, but this has no meaning with media files, so the  addition creates a new URL to the same media file that can bypasses the cache entries of recently changed files. Without this, there would be a delay before updates to media files could be seen.