Server push mechanism
Articles introduced the server push mechanism on html Traditional Comet mechanism http://www.ibm.com/developerworks/web/library/wa-reverseajax1/index.html HTML5 Websocket http://www.ibm.com/developerworks/web/library/wa-reverseajax2/index.html Java server side solution for comet/websocket http://www.ibm.com/developerworks/web/library/wa-reverseajax3/index.html Java framework for comet/websocket http://www.ibm.com/developerworks/web/library/wa-reverseajax4/index.html