1. Pingooo (COSCUP team) 2010-08-15 COSCUP / GNOME.Asia 2010 A Beautiful Mistake What was learned about App Engine with the registration system

2. Disclaimer (legal) The content of this talk is the speaker's personal opinion and is not the opinion or policy of his employer or COSCUP Team.

3. The Growth of COSCUP

4. The Growth of COSCUP ?

5. 總召 Jouston: 「話說回來，若是可以辦到 700 人以上， 我就在 2010 慶功宴上 倒立做伏地挺身 。」 — 2009/08/24

6. 行銷組的使命 「讓更多人知道COSCUP、 注意COSCUP、 報名COSCUP」

7. 其實：讓 Jouston 倒立做伏地挺身

9. 98次噗浪

10. 10次社群聚會宣傳

11. 2份EDM，寄給2000多人

12. 其實：讓 Jouston 倒立做伏地挺身

13. Decided to open up 610 slots

15. Peak time 2x = 6.66/min

16. A small piece of cake

18. The web site produces a URL containing a confirmation code and send it to the e-mail address.

19. Recipient of the e-mail clicks the URL to complete the registration process.

20. Really a small piece of cake. Any computer science student can do it.

22. Reservation code: for important community members that can't go online when the registration opens. (different flow)

23. Questionnaire: collect data for marketing team and program committee.

24. Nothing but a small piece of cake.

26. Internationalize messages in templates

27. Translation of message files

28. Browser language preference detection

31. make-messages.py -l zh_TW # updates django.po

32. vim conf/locale/zh_TW/LC_MESSAGES/django.po

33. compile-messages.py # makes django.mo

34. “ Template Method” design pattern

35. Load the i18n module “ Template Method” design pattern

36. Load the i18n module “ Template Method” design pattern

37. One more App Engine trick Better have this for service calls.

38. Set the opening time 2010-07-05T20:00:00 +0800

39. But... Need to pick up kids Leave @ 19:45 Back @ 20:20

40. 花生省魔術？ Dashboard / Logs @ http://appengine.google.com/logs?app_id=foo&version_id=bar California time

41. What was missing?

42. How can it be?

43. Pingooo當司機 Pingooo回到電腦前 (3616 hits, 295 IPs) @ 20:00

44. Yooooooooooooooooooooo!

45. Quota?

46. 鐵齒 leads to FAILURE

48. The fix: Task Queue add URL request (Flow control)

50. Can't run a process > 30 seconds

52. Queuing task: queue X e-mail tasks + self, update state in bookkeeping

53. Email task: send the e-mail to one participant, update state. Yes, you write 3 request handlers to send 1 batch of e-mails.

55. You need to care how processes are run

56. You need to pay attention to quota

57. You need to handle exceptions for services And you'll get scalability in return.

58. Pingooo去當司機