WebSockets look to be supported reasonably well in Cache. I have yet to use them in production so I am wondering how well it has worked for other developers.
In particular what happens when the browser does not support WebSockets, or when a firewall blocks the connection.
Have you had to write your own long polling fall-back?
I've read the documentation and found this interesting article...
https://community.intersystems.com/post/asynchronous-websockets-quick-tutorial