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Jetty includes a servlet implementation of the Bayuex Bayeux protocol of cometd the CometD project from the Dojo Foundation.

Cometd CometD is a message bus for Ajax web applications that allows multi channel messaging between client and server - and more importantly - between server and client. The paradigm is publish/subscribe to named channels.


There is more information on the website, but here's a few links to get you started:

Read the page on Stress Testing Cometd for more information on how to tune and scale jetty for Bayeux.

hassle gregw(at) for more details (and to write them up here).

Contact the core Jetty developers at
private support for your internal/customer projects ... custom extensions and distributions ... versioned snapshots for indefinite support ... scalability guidance for your apps and Ajax/Comet projects ... development services from 1 day to full product delivery