Pimcore\Cache::getDefaultCache PHP Method

    public static function getDefaultCache()
    {
        if (\Pimcore\Config::getSystemConfig()) {
            // default mysql cache adapter
            $config = self::getDefaultConfig();
            $cache = self::initializeCache($config);
        } else {
            $cache = self::getBlackHoleCache();
        }
        return $cache;
    }