Understanding client_id in the message bus

I mostly don’t understand it, but you can look at the browser dev tools and see that every open window is regularly polling the message bus. That’s how stuff happens without reloading the page, like seeing posts get edited, message counts updated, and so on. It’s expected that it will be a lot. Looks like it’s polling a random number, so you (or at least I) can’t tell (easily) what user it is.