What are Socket.IO rooms and how do they work?

What are Socket.IO rooms and how do they work?

Socket.IO rooms are a way to group sockets together. They allow you to broadcast messages to specific subsets of connected clients.

How do I create a room in Socket.IO?

You can create a room by using the join method on the socket instance. For example, socket.join('roomName').

Can a socket be in multiple rooms?

Yes, a socket can join multiple rooms simultaneously, allowing it to receive messages from all those rooms.

How do I send a message to a specific room?

You can use the to method to send a message to a specific room. For example, io.to('roomName').emit('event', data).