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Comet and jQuery
im so tired of not finding good tutorials on long polling/streaming comet techniques with jquery. what is wrong with the comet community. a lot of people wanna use this but there are no good tutorials about it.
why so slow?
It's not a question about the comet community, it's just that this is only half of the problem. You eventually need a comet client (such as jquery, dojo, or custom clients according to the server), but first you need a comet server to connect to (such as Jetty, WebSync, etc). Once you pick the server, you can then pick the client. If it's a Beayux client (such as the two servers mentioned) which is an open spec, then you can just plug in any client that supports that standard.
来源：https://stackoverflow.com/questions/2015443/jquery-comet-long-polling-and-streaming-tutorials