Redis/Valkey changes, difference from the default Redis configuration.
If no max. is set, Redis/Valkey can use all the RAM. We want to avoid this and limit the RAM usage of the Redis server. If you want to limit the Redis process and to what extend, that is up to you. Don't forget to change the max memory policy (the default policy is not what you want). More info: https://valkey.io/topics/lru-cache/
I also bind only to IPv4. And created a valkey socket file with 777 permissions. And use io-threads (default is also 4 in Valkey).