Checkout this server side thread. Folks are starting to think about using JavaScript on the browser to access an “Internet Messaging Bus”. They want to have thing like:

• Guaranteed delivery
• Once and only once deliveryGuaranteed
• order of deliveryServer
• push and client pullFunny

thing is that most of all that is available today with ActiveMQ! And to get really great performance, use ActiveMQ with Jetty! ActiveMQ comes with a simple little JavaScript API that allows you to access the ActiveMQ message bus using Comet style http polling. And ActiveMQ provides you all the above guarantees like all good message brokers.

Other news on this front is all the Ajax tool kits are starting to look at being able to inter-operate. At a minimum, a page with multiple tool kits will need to share it’s connections back to the server. So they will need to share an API to broker requests back to the server. I’ll keep an eye out for this API because it sounds like something that could be easily tied into ActiveMQ.