public static function init()
 {
     self::$gzip_level = (int) SIMPLE_CACHE_GZIP_LEVEL >= 0 && (int) SIMPLE_CACHE_GZIP_LEVEL <= 9 ? (int) SIMPLE_CACHE_GZIP_LEVEL : 0;
     //			self::$intervals['default'] = (int)SIMPLE_CACHE_DEFAULT_TIME;
     //			$cache_block_intervals = explode(',', SIMPLE_CACHE_BLOCK_TIME);
     //			foreach($cache_block_intervals as $cache_block_interval){
     //				$interval = explode(':', $cache_block_interval);
     //				self::$intervals[$cache_block_interval[0]] = (int)$cache_block_interval[1];
     //			}
     self::$cache_folder = DIR_FS_SQL_CACHE . '/simple_cache/';
     self::setStore(self::$cache_folder);
 }