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Comet

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Transcript

  • 1. Comet A New Approach to Ajax Applications
  • 2. 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
  • 3.  
  • 4.  
  • 5. 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
  • 6. 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
  • 7. Who is using?
    • GMail’s GTalk integration
    • Jot Live
    • Renkoo
    • Meebo
  • 8. References
    • http://alex.dojotoolkit.org/?p=545
    • http://ajaxian.com/archives/comet-a-new-approach-to-ajax-applications

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