I have a process separate to the main socket.io servers, which doesn't
accept any clients itself. It just manages the rooms, runs different
checks on an interval etc. I'm using the RedisStore.
How would I go about getting the number of clients in a certain room from
this external process? Is there a way to do:
1. do io.sockets.clients(room).length but without accepting any clients?
2. get the number of clients in a room directly from redis?