I've been getting into comet a bit more lately, and am wondering (if you don't mind telling of course) 1) what you are currently using on the backend and 2) if you ever checked out Meteor (which I was playing with today)?
I decided to write my own. Gives me much more flexibility and am able to change, adapt, streamline the backend as much as I like. (Java nio) It peaks at about 10k connections at the busy times at the moment (incoming and outgoing). The backend code is about 22k lines of code, but that's everything - not just the base comet server.
I did have a look at Meteor and some of the other comet type servers but they didn't look like they would be a great solution for what I needed.
I've been getting into comet a bit more lately, and am wondering (if you don't mind telling of course) 1) what you are currently using on the backend and 2) if you ever checked out Meteor (which I was playing with today)?