I am now using socket.io with multiple nodes hence I started using the socket.io-redis adapter (https://github.com/socketio/socket.io-redis) to help me sync between nodes.
I would like to get a list of all the rooms on the server and a corresponding number of clients in each room efficiently.
At any one time I may have thousands of rooms and would like to get a count quickly of each room.
To get a list of all the rooms I would do:
io.of('/').adapter.allRooms((err, rooms) => {
console.log(rooms); // an array containing all rooms (accross every node)
});
This returns a list of all the rooms, but at this point I am unsure how many connections each user has.
I could then run the next query to get the count for each room individually:
//query the first room, second room and so on...
io.in('firstroom').clients((err, clients) => {
console.log(clients); // an array containing socket ids in 'room3'. Aggregate them to get the count
});
This seems very inefficient as I will be making so many calls to get the count individually. Is there a more efficient way than this to get a list of all the rooms with an associated count of connections? I have looked into modifying the adapter code but I do not really understand the code all that well to make any changes.
