☄ Cometd Bayeux Ajax Push Cometd is a scalable HTTP-based event routing bus that uses a Ajax Push technology pattern known as Comet. The term 'Comet' was coined by Alex Russell in his post Comet: Low Latency Data for the Browser. Cometd is a Dojo Foundation project to provide implementations of the Bayeux protocol in javascript, java, perl, python and other languages. Other organizations (eg. Sun