Socket Io Rooms Redis

Creating a real time chat app with redis node js and socket io if you have redis node js and the heroku toolbelt installed on your machine then you ve got everything you need to build a real.

Socket io rooms redis.

This is the adapter using the redis pub sub mechanism to broadcast messages between multiple nodes. Rooms are used to further separate concerns. Once socket io establishes connection we used the redis client to subscribe to chatmessages and activeusers channels. There are several ways to tackle this problem like implementing your own channel to send messages into the process.

For global broadcasts the channel name is. We then broadcasted the message with socket io using message event for messages from chatmessage channel and users event for messages from activeusers channel. Does socket io redis keep connections upon restart in cluster mode. For every socket connection the user makes we add the socket instance to a room dedicated for this user.

In some cases you might want to emit events to sockets in socket io namespaces rooms from outside the context of your socket io processes. Default value is socket io. Rooms also share the same socket connection like namespaces. This module is not intended for end user usage but can be used as an interface to inherit from from other adapters you might want to build like socket io redis.

Socket io rooms a much better approach can be to use socket io rooms to maintain the individual connections for a user. To facilitate this use case we created two modules. The socket io redis adapter broadcasts and receives messages on particularly named redis channels. This is the default socket io in memory adapter class.

296 opened nov 19 2018 by cschwaderer the function that takes a list of sockets in a room takes a long time. Prefix namespace in broadcasting to a single room the channel name is. The base channel name. Prefix namespace room prefix.

The rooms that the socket which is disconnecting from still appear in the print out yet their values will appear as empty arrays indicating no remaining users. Within each namespace you can also define arbitrary channels that sockets can join and leave. One thing to keep in mind while using rooms is. Let s call the room room josh.