How to implement facebook like notification on cakephp?

does somebody knows how to implement facebook like notification? the id开发者_StackOverflowea is to put notification on the tabs parallel to the changes made in the database without refreshing the site? if a data is added to the database, the site should react on it. thank you.. cheers!

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Facebook style notifications are achieved in web applications using realtime web technologies such as Comet servers or WebSocket servers. It is possible to add this functionality directly into a PHP application but it's widely agreed that PHP doesn't handle persistent/long-held connections very well (it won't scale). If you still want to host your own realtime PHP solution here are a few resources:

• StackOverflow question about AJAX PHP Push
• phpwebsocket
• Start using HTML5 WebSockets today
• php-websocket
• How to implement Comet in PHP

However, I'd recommend you look at a hosted solution (I work for one such company) which means all you need to do is make a HTTP call to a RESTful API and embed a JavaScript library within your application to achieve your push notifications. More information why I recommend using a hosted service in this SO question on Apache and Comet