Support multiple nodes

[idlewinn]

https://socket.io/docs/using-multiple-nodes/

Right now, the websocket server only uses one node. As the app grows in users we will reach a point where this is no longer sustainable, so we'll need to be able to handle hosting multiple nodes and broadcasting events between them.

[dearmisterrobot]

Does running excalidraw as a Docker image in several instances using Kubernetes solves this problem out-of-the-box?

[maielo]

Depends on how you want to handle it. One droplet running instance on multiple nodes (CPUs) using for instance pm2? Or having Redis in front and having multiple servers?

pm2 cluster - https://socket.io/docs/v4/pm2/

Redis - https://socket.io/docs/v4/redis-adapter/