Neos\Cache\Backend\RedisBackend::verifyRedisVersionIsSupported PHP Метод

    protected function verifyRedisVersionIsSupported()
    {
        // Redis client could be in multi mode, discard for checking the version
        $this->redis->discard();
        $serverInfo = $this->redis->info();
        if (!isset($serverInfo['redis_version'])) {
            throw new CacheException('Unsupported Redis version, the Redis cache backend needs at least version ' . self::MIN_REDIS_VERSION, 1438251553);
        }
        if (version_compare($serverInfo['redis_version'], self::MIN_REDIS_VERSION) < 0) {
            throw new CacheException('Redis version ' . $serverInfo['redis_version'] . ' not supported, the Redis cache backend needs at least version ' . self::MIN_REDIS_VERSION, 1438251628);
        }
    }