Which is better Comet or AJAX in term of 10->15 second polling?
My site almost done but i have a problem. I want something like that every 10->15 second, my site will search database to check whether there are updates or not. If having updates then send a notification to user who online.
I search google and find two solutions: Comet and AJAX. Which is better in my case. If two of them is not suitable, could you suggest me other way? 
Which is better Comet or AJAX in term of 10->15 second polling?
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My site almost done but i have a problem. I want something like that every 10->15 second, my site will search database to check whether there are updates or not. If having updates then send a notification to user who online.
I search google and find two solutions: Comet and AJAX. Which is better in my case. If two of them is not suitable, could you suggest me other way? 