ASP.NET asynchronous controllers and long polling

Question

I've been looking for IIS based solutions for comet/push/reverse-ajax pages, and came upon asynchronous controllers

It seems like that allows xhr long polling without the problem of running out of threads, am I correct? Does this allow fairly decent scaling for long polling pages?

Answer 1

I would say take a look at signalR. Nodejs for iis is also an option

Answer 2

If you are looking for a pro solution with built in websocket, pick PokeIn

Answer 3

See ASP.NET MVC 3 real time events.

To make scaling easier/less of an issue I'd recommend using a dedicated realtime server (see this realtime technology guide; something that has been built from the ground up with realtime communication in mind.