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Comet
 

Comet

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    Comet Comet Presentation Transcript

    • Comet A New Approach to Ajax Applications
    • What is Comet?
      • Comet describes applications where the server keeps pushing data to the client, instead of having the browser keep polling the server for fresh content
    •  
    •  
    • When use comet?
      • Single interaction updates are not enough
      • User in the same ‘space’ need live update of:
        • Their own changes
        • The changes other make
    • Benefits
      • Applications can deliver data to the client at any time, not only in response to user input
      • The data is delivered over a single, previously-opened connection.
      • Avoids HTTP & TCP/IP set-up and tear-down
      • Reduces the latency for data delivery
    • Who is using?
      • GMail’s GTalk integration
      • Jot Live
      • Renkoo
      • Meebo
    • References
      • http://alex.dojotoolkit.org/?p=545
      • http://ajaxian.com/archives/comet-a-new-approach-to-ajax-applications