When using redis, there is no sessionid depending to the max-age value

[NAMGIYOON]

Hello~.

1. For use as a browser session, the max-age value was set to the default.
2. If the max-age value was not set, no session was created.
3. It works when memcached is used instead of redis.

Why is redis the only problem?

If you have experience or know, please reply. Thank You.