You have probably heard of AJAX, but have you heard of Comet? Yes, they are both household cleaners you might find under your kitchen sink, but that’s only part of the story.
In the web realm, Comet refers to an architecture that enables a server to actually push data to a client without the client explicitly requesting it. Given that web servers were built to be very good at doing exactly the opposite over a stateless protocol, you should be quite intrigued at this point, so head on over to Comet Daily, a fantastic site that includes incredibly informative articles on Comet, to get some insight on what is going to be the next big thing in web programming.
Right now, there is a series running with the theme of Colliding Comets which includes a number of presentations and rebuttals that discuss opposing philosophies on how to most effectively realize Comet. Trust me, you won’t be disappointed. This is good stuff, and it’s full of substance.
My upcoming book, tentatively titled Developing with Dojo, includes an in depth example of cometd. We hope to have the book available via Rough Cuts very soon, so if you’re interested in using Dojo with Comet, keep an eye out for future posts about its release.