Is it okay to store ws clients in an array in NodeJS?

Question

I'm using the ws library so WebSockets implementation. In this, to broadcast, the GitHub page has a sample code that does a forEach on wss.clients and sends data to everyone of the clients.

But, I don't like the idea of storing clients, an important set of data, in an array that can be destroyed by a simple server restart.

Is there a way to store the clients somewhere more persistent, like Redis. So, I store the metadata of clients in Redis and create the client on the go from Redis as required.

Or is this Redis a bad approach and arrays are just good enough?

Any reference on the matter would be wonderful.

Answer 1

I would advice you to follow the approach in https://medium.com/@willrigsbee/how-to-keep-track-of-clients-with-websockets-1a018c23bbfc It is better to create an object with key/value pair so that the key will be the userId and value will be the socket.