- $key = wfMemcKey( 'attempt-failures', $wgAttemptFailureEpoch,
- $file->getRepo()->getName(), $file->getSha1(), md5( $thumbName ) );
+ $cache = ObjectCache::getLocalClusterInstance();
+ $key = $cache->makeKey(
+ 'attempt-failures',
+ $wgAttemptFailureEpoch,
+ $file->getRepo()->getName(),
+ $file->getSha1(),
+ md5( $thumbName )
+ );