appengine ja night #1 - #10 review

@kazunori_279

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

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

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

Sessions Review

Bigtable & Slim3 •  by @higayasuo

•  Slim3

•  slim3.org

•  Full-stack MVC for GAE/J

•  "Less is More"

• Check out the demo later!

Low Level API & Protocol Buffer

•  by @shin1ogawa

Best practices on production GAE apps

•  by @bluerabbit777jp

•  Task chain pattern

Parallel PDF Creation by Task Queue

•  by Takezaki-san

Scala DSL-based MDA •  Simplemodeler by @asami224

• Mindmap

•  to GAE/Py & Java

BASE tx design patterns •  by @ashigeru

•  Idempotence + Exactly Once pattern on TQ

Anti patterns of App Engine •  by @tmatsuo

Global transaction support on Slim3

•  by @higayasuo and @ashigeru

•  based on 2-phase commit protocol

Test Driven Development on App Engine

•  by @shin1ogawa

Aggregation by Indexable Skip List

•  by @koher

•  Sum, max, min, avg and etc. of a range

•  at O(log N) !!

Understanding Query and Next Gen Query

•  by @bufferings and @kazunori_279

Space Filling Curve for multi-dimensional queries

•  by @ashigeru

Mirah and Dubious •  by @headius and @johnwoodell

Google Apps Marketplace + GAE

•  by @nakajiman

Java EE technologies on GAE •  by @shumpei

•  for "DaVinchPad" service

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!

Social Apps on GAE and Slim3

@higayasuo

Social Apps on GAE

mixi app "Funyamorake" • by Piisu Co. (@funyamora)

• 6.3M reqs/day

• about $15/day

• Flash+GAE/J LL API

Sport SNS "LaBOLA"

• by LUXEYS

• @najeira

• GAE/Py

• Requirements:

• 100M PV/month

• Autoscaling

Groupon-type EC "Buy7ow"

• by Prophet Co.

• @knj77

• Web-scale system for social marketing

• GAE/J (Slim3)

• Global tx

Web UI for Sony BD Recorders "Chan-Toru beta"

• by VisionArts

• for PC and Smartphones

• Open ID

• GAE/J (Slim3)

• Global tx

Slim3 for Social Apps

Important requirements for social apps

• Database scale-out

• Autoscaling

• High cost performance

• Low management cost

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

Flash + GAE/J with s3blazeds

s3blazeds

• by @kazunori_279

• Adobe BlazeDS for GAE/J

• AMF RPC

• Slim3 support (in future)

• Key serialization

• Hot reloading