The problem/use-case that the feature addresses

In a microservice environment we may have many clients connecting to the same Redis instance. Due to ACL we may now let these clients have restricted access to their own namespaces for stored data, but we can not give them access to pub/sub without giving them the possibility to interfere with eachother.

Description of the feature

It should be possible to allow users pub/sub access to only certain channels, similarly to how we restrict access to keys

Alternatives you've considered

• Have seperate Redis instances for clients that should communicate
• Allow clients to interfere with eachother
• Use non-redis pub/sub features

Additional information
I couldn't find any information regarding this feature or whether it has been discussed before