1. London Ajax User Group
July 13, 2010
Wednesday, July 14, 2010

2. Welcome!
• About Us (@dylans)
• Moderator, Dylan Schiemann
• SitePen, Dojo, Comet Daily, cometD,
Persevere, mod_pubsub, Hookbox
• Thanks to Skills Matter, JSFiddle, SitePen,
Comet Daily, & O'Reilly
Wednesday, July 14, 2010

3. Format
• Quick Intro
• Panel (Questions at http://bit.ly/aMjyaP)
• Prizes
• Pub
Wednesday, July 14, 2010

4. Tonight
• 18:00 Meet & Greet
• 18:20 Intro
• 18:30 Panel
• 19:55 Prizes & Future Events
• 20:00 Pub
Wednesday, July 14, 2010

5. What is Comet?
• Techniques for long-lived connections
• Low-latency data transmission from the
server to the browser or client
• Deliver data to the client at any time
• Improve speed and scaling over Ajax
• Develop event-driven web applications
Wednesday, July 14, 2010

6. What is Comet?
• Servers (long-lived connections)
• Clients (JavaScript and server-side)
• Protocols (Bayeux, CSP, XMPP, etc.)
• Transports (long-polling, HTML5
WebSocket, forever-frame, etc.)
Wednesday, July 14, 2010

7. Comet Examples
• Quick Example: http://dylan.io/graph.php
• Chat
• Reporting & Monitoring
• Collaboration
• Trading
Wednesday, July 14, 2010

8. Panelists
• Alessandro Alinone, Lightstreamer
• Andrew Betts, Meteor Server
• Anthony Catel, APE
• Jerod Venema, WebSync
• Joe Walker, DWR
• Martin Tyler, Liberator
• Simone Bordet, cometD-Jetty
Wednesday, July 14, 2010

9. Comet Panel
July 13, 2010
Concise questions, witty answers.
Wednesday, July 14, 2010

10. Prizes
Wednesday, July 14, 2010

11. Future Events
• August: Server-side JS
• September:
Microtoolkits
• October: Ajax Toolkits
Panel
• November: Performance
• December: no event
Wednesday, July 14, 2010

12. Other Events
• Dojo Mobile Weekend (July 31& August 1)
• Dojo Workshop (August 10-12)
• London Ajax August 10
• JSConf.eu, Berlin, late September
• JAOO, early October, Denmark
Wednesday, July 14, 2010

13. Resources
• APE http://www.ape-project.org/ • Meteor http://meteorserver.org/
• Caplin Liberator: http:// • Nirvana http://www.my-
www.caplin.com/caplin_liberator.php channels.com/products/nirvana.html
• cometD-Jetty http://cometd.com/ • Node.js http://nodejs.org/
• DWR http://directwebremoting.org/ • Orbited http://orbited.org
• ErlyComet http://code.google.com/p/ • Persevere http://www.persvr.org/
erlycomet/
• Tornado http://github.com/facebook/
• Hookbox http://hookbox.org/ tornado/
• Lightstreamer http:// • WebSync http://frozenmountain.com/
lightstreamer.com/
Wednesday, July 14, 2010

14. Resources
• http://cometdaily.com/ @cometdaily
• http://www.meetup.com/londonajax/
calendar/13682478/
• http://skillsmatter.com/
Wednesday, July 14, 2010

15. Thanks!
to the panelists
Wednesday, July 14, 2010