protected static function loadCacheFile( $cacheID = 'index' )
    {
        if ( isset( self::$cacheFiles[$cacheID] ) )
        {
            return self::$cacheFiles[$cacheID];
        }

        $info = self::cacheInfo();
        $cacheFileName = $info['path'] . '_' . $cacheID . '.php';

        self::$cacheFiles[$cacheID] = eZClusterFileHandler::instance( $cacheFileName );
        return self::$cacheFiles[$cacheID];
    }