- $cache = ObjectCache::getMainStashInstance();
- $key = wfMemcKey( 'page-recent-delete', md5( $logTitle->getPrefixedText() ) );
+ $cache = MediaWikiServices::getInstance()->getMainObjectStash();
+ $key = $cache->makeKey( 'page-recent-delete', md5( $logTitle->getPrefixedText() ) );