Scalability

Some informal text: I describe how the new y-redis persistence layer can be used to scale to an infinite amount of users. The following idea needs proof.
The servers persist modifications using non-blocking operations on Redis and exchange document updates via Redis PubSub. Because of the non-blocking nature of database modifications, it is possible to spin up several servers serving the same Yjs room. At any time, one or all servers may be killed without losing any content that was already transmitted to Redis. The scalability is only limited by the scalability of Redis. This makes it theoretically possible to serve a single Yjs room to a HUGE amount of users!