1.

2. outline

3. node.js knockout 4. pictshare

node.js

5. html5 6. websockets 7.

california state university, northridge

/ in computer science

8. multitouchj: multitouch framework in java jet propulsion laboratory

software engineer

@atsuya 9. http://github.com/atsuya 10. 11. 12. node.js knockout

node.js 48

13. 1 - 4 14. 15. github heroku joyent 16. 17. 200 18. node.js knockout 19. node.js knockout

Ge Wang

ChucK

20. stanford university assistant professor John Resig

Firefox

21. jQuery Ryan Dahl

Node.js

22. node.js knockout

Angus Logan / Windows Live, Andy Brett / TechCrunch, Brendan Eich / Mozilla, Andrew Hill / LinkedIn, Joe Hewitt / Firebug | Facebook, Atul Varma / Mozilla,Mary Glide / Sequoia Capital, Mohammed Abdoolcarim / Siri|Apple, Elad Gil / Twitter, Tom Nguyen / Adobe Systems, Matt Soldo / Heroku, Elizabeth Cha / Google, Mikeal Rogers / CouchDB | Couchio, Ryan Grove / Yahoo!, Eliot Horowitz / 10gen | MongoDB...

23. 24. node.js knockout

asuka

25.

pictshare

26. 27. pictshare

node.js

ajax

28. couchdb 29. websockets web browser

ajax

30. 31. Demo 32. pictshare 33. 34. node.js

Evented I/O for V8 JavaScript.

35. node.js

• Node tells the operating system (through epoll, kqueue, /dev/poll, or select) that it should be notified when a new connection is made, and then it goes to sleep.

asynchronous

users of Node are free from worries of dead-locking the processthere are no locks. Almost no function in Node directly performs I/O, so the process never blocks.

36. node.js 37. node.js 38. node.js 39. node.js 40. html5

41. websockets

is a technology providing for bi-directional, full-duplex communications channels, over a single Transmission Control Protocol (TCP) socket

42. firefox 4, google chrome 4, opera 10.70, safari 5 43. ajax poll push 44. 45. websockets

46. websockets

47. node.js knockout

57/98

48. Ge Wang

• really like the simple collaborative aspect of this. it was fairly unclear what to do at first or what the five squares below meant, until someone else participated.

John Resig

...There were a few other users connected when I tried it and we share a couple pictures with each other, which was mildly entertaining...

49. node.js knockout

Ryan Dahl

• Neat concept! Snappy response time. I could see how this could be fun. I would have liked to be able to enter images by URL and/or from webcam. Images should be "sticky" to new users coming to the site - so they don't get blanks.

50.

51. 52. 53. 54.

http://github.com/atsuya/pictshare

55.