The document reviews a series of community events called 'App Engine JA Night' that have been held since October 2009 for App Engine developers in Japan. It details various sessions covering topics such as best practices, unit testing, and social applications on Google App Engine, along with the number of participants for each event. Additionally, it discusses the use of Slim3 as a full-stack MVC framework for GAE and highlights the significance of global transactions and autoscaling in application development.

1. appengine ja night #1 - #10
review
@kazunori_279

2. about me
• Kazunori Sato
• twitter: @kazunori_279
• Freelance engineer (App Engine, Java,
Python, Adobe Flex/AIR, Ruby and etc)
• Technical writer, translator and instructor
• Google API Expert (App Engine)
• appengine ja night admin
• jsonengine and s3blazeds committer

3. about "appengine ja night"
• Community events for App Engine developers
• Since Oct 2009
• Events
• appengine ja night (monthly)
• appengine ja night in kansai
• by GTUG Kyoto (@bufferings)
• appengine ja hack-a-thon
• by @marblejenka and @shin1ogawa
• appengine ja night Sapporo
• by @shuji_w6e

4. appengine ja night sessions
Date Sessions # of regs Place
ajn#1 Oct
2009
"JDO pitfalls" by @higayasuo
"Low Level API + Unit testing" by @shin1ogawa
31 Google Tokyo
ajn#2 Oct
2009
"JDO pitfalls" by @higayasuo
"Low Level API + Unit testing" by @shin1ogawa
73 Recruit MTL
ajn#3 Dec
2009
"Best practices on production apps" by @bluerabbit777jp
"How to create a scalable apps" by Takezaki-san
71 Gree
ajn#4 Jan
2010
"DSL driven development on GAE" by @asami 224
"App Engine transaction puzzlers" by @ashigeru
95 Recruit MTL
ajn#5 Feb
2010
"App Engine Anti-patterns" by @tmatsuo
"Global Transaction" by @higayasuo
124 Gree
ajn#6 Mar
2010
"Global Transaction" by @ashigeru and @higayasuo 127 Recruit MTL
ajn#7 Apr
2010
"Unit testing on GAE" by @shin1ogawa
"GAE Q&As" by @shin1ogawa
140 Gree
ajn#8 Jun
2010
"Using GAE on building Sport SNS site" by @najeira
"Fast aggregation by skip list" by @koher
130 Recruit MTL
ajn#9 Jul
2010
"Understanding Query" by @bufferings
"Next Gen Query" by @kazunori_279
108 the Canteen
ajn#10 Aug
2010
"Slim3 on App Engine" by @higayasuo
"Mirah and Dubious" by @headius and @johnwoodell
"Google Apps Marketplace + GAE" by @nakajiman
"DaVinciPad on GAE/J" by @shumpei
120 Google Tokyo

5. Sessions Review

6. Bigtable & Slim3
• by @higayasuo
• Slim3
• slim3.org
• Full-stack MVC for
GAE/J
• "Less is More"
• Check out the demo
later!

7. Low Level API & Protocol Buffer
• by @shin1ogawa

8. Best practices on production GAE apps
• by @bluerabbit777jp
• Task chain pattern

9. Parallel PDF Creation by Task Queue
• by Takezaki-san

10. Scala DSL-based MDA
• Simplemodeler by @asami224
• Mindmap
• to GAE/Py & Java

11. BASE tx design patterns
• by @ashigeru
• Idempotence + Exactly Once pattern on TQ

12. Anti patterns of App Engine
• by @tmatsuo

13. Global transaction support on Slim3
• by @higayasuo and @ashigeru
• based on 2-phase commit protocol

14. Test Driven Development on App Engine
• by @shin1ogawa

15. Aggregation by Indexable Skip List
• by @koher
• Sum, max, min, avg and etc. of a range
• at O(log N) !!

16. Understanding Query and Next Gen Query
• by @bufferings and @kazunori_279

17. Space Filling Curve
for multi-dimensional queries
• by @ashigeru

18. Mirah and Dubious
• by @headius and @johnwoodell

19. Google Apps Marketplace + GAE
• by @nakajiman

20. Java EE technologies on GAE
• by @shumpei
• for "DaVinchPad" service

21. How to attend?
• Announcements:
@appengineja on twitter
Google App Engine Japan ML
• Links to the appengine ja night reports
http://bit.ly/dD2fUu
• Meet us at Developer Sandbox ajn booth!

22. Social Apps on GAE and Slim3
@higayasuo

23. Social Apps on GAE

24. mixi app "Funyamorake"
• by Piisu Co. (@funyamora)
• 6.3M reqs/day
• about $15/day
• Flash+GAE/J LL API

25. Sport SNS "LaBOLA"
• by LUXEYS
• @najeira
• GAE/Py
• Requirements:
• 100M PV/month
• Autoscaling

26. Groupon-type EC "Buy7ow"
• by Prophet Co.
• @knj77
• Web-scale
system for social
marketing
• GAE/J (Slim3)
• Global tx

27. Web UI for Sony BD Recorders
"Chan-Toru beta"
• by VisionArts
• for PC and
Smartphones
• Open ID
• GAE/J (Slim3)
• Global tx

28. Slim3 for Social Apps

29. Important requirements for social apps
• Database scale-out
• Autoscaling
• High cost performance
• Low management cost

30. Why Slim3?
• High performance (= low cost)
• No Reflection
• Global transactions
• Fast spin-up
• Good textbook
• Slim3 on Google App Engine for Java
• Active community
• appengine ja night
• On Twitter: #appengine #slim3

31. Flash + GAE/J
with s3blazeds

32. s3blazeds
• by @kazunori_279
• Adobe BlazeDS for
GAE/J
• AMF RPC
• Slim3 support (in future)
• Key serialization
• Hot reloading