The state of Socket.IO rooms are only in memory on the api

[davidvandusen]

Expected behaviour

Restarting the api does not lose the state of which sockets are in which rooms.

Actual behaviour

Restarting the api causes all the rooms that sockets have joined to be lost because that state is not persisted (or shared between api instances, for that matter.)

Details and resources

Socket.IO has adapters for this sort of thing, such as https://socket.io/docs/v4/redis-adapter/.

Checklist

• This issue is linked to the appropriate project.
• This issue has appropriate labels.