Google App Engine (GAE) is a platform that allows developers to build and host web applications in Google's infrastructure. Key points: - GAE provides scalable hosting for web applications built using Python, Java, and other technologies. - It offers APIs for common services like data storage (BigTable), user authentication, mail sending, and image processing. - Applications can scale automatically based on traffic and are subject to resource limits of 500MB of storage and 500 concurrent requests.

1. Google App Engine
2009.1.12
Kosuke Matsuda

2. GAE
• Google Google
Web

3. • Google Web
•
•
• Google API
•

4. • Python ( 2.5 )
• Django,webapp,web.py,Pylons
• Java ( Java5,6 )
• JRuby

5. API
• BigTable ( RDBMS, GQL )
• User API ( Google Account )
• URL fetch ( HTTP/HTTPS )
• Mail
• memcache
• Image Manipulation
• cron

6. • 500MB
• 500
•1 10
• 30
• 1,000

7. Try GAE

8. • OS : MacOS X 10.6.2
• Python : Python 2.5.4 ( MacPorts )
• Google App Engine SDK for Python 1.3.0 -
2009-12-14

9. App Engine SDK
http://code.google.com/intl/ja/appengine/
downloads.html
GAE

10. 1.
2. app.yaml
3. dev_server.py Web
4. localhost:8080
5. appcfg.py

11. webapp Framework

12. (app.yaml)
• application:App Engine
ID
• version:application’s version
• runtime:python(java)
• handlers:URL

13. × wsgiref.handlers.CGIHandler().run(application)
http://code.google.com/intl/ja/appengine/docs/python/gettingstarted/
usingwebapp.html

14. WSGI
• Web Web
Ruby,Rails Rack

15. GAEO
Google App Engine Oil

16. GAEO
Google App Engine Oil (GAEO) App Engine
(MVT)
GAEO Rails Zend Framework
GAEO "convension over configuration
" Web
http://doc-ja.gaeo.org/tutorials/introduction

17. • URL Routing
• generator
• Association
• plugins

18. generator
$ gaeo Hoge
$ gaeogen model Foo
$ gaeogen controller Bar
$ gaeogen scaffold Buzz new edit ...
“title=StringProperty(required=True)” ...

19. • Pros
•
• Cons
• Ruby ! Python !?