In the modern web, the user rules. Nearly every successful web app has to worry about scaling to an exponentially growing user base and giving those users multiple ways of interacting with their data. This talk will provide an overview of two technologies that aim to make web development and data portability easier: Google App Engine and the Google Data APIs. This talk was presented by Pamela Fox, who works on the Google Developer Relations team as the Maps API Support Engineer.

3. Introductions http://www.wordle.net/gallery/wrdl/710650/fkedupmonkey_tags

4. The Cloud!

6. Before the Cloud: Web Apps

7. After the Cloud: Web Apps

9. Solution: App Engine

13. App Engine Architecture code data

14. Non-Scalable Architecture code/data

15. Python

16. Data Store

17. Data Store db.GqlQuery(&quot;SELECT * FROM Shout &quot; &quot;WHERE who >= 'b ' AND who < ' c ' &quot; &quot;ORDER BY when DESC&quot;).fetch(100) query = Shout.all() query.order('-date') query.filter('who >=', 'b') query.filter('who <', ‘c') shouts = query.fetch(100)

18. Memcache

19. Users @gmail.com @myappsdomain.com

21. Before the Cloud: User Apps

22. Before the Cloud: User Apps

24. Solution: Google data APIs

25. How Do You Make Things Accessible? A pplication P rogramming I nterface ( )

28. Remote Procedure Calls fooInstance->addNumbers(2, 3); <?xml version=&quot;1.0&quot;?><methodCall> <methodName>Foo.addNumbers</methodName> <params> <param> <value><int>2</int></value> <value><int>3</int></value> </param> </params></methodCall> fooInstance.addNumbers(2, 3); PHP XML (Network) C++

29. REST [Fielding 2000] Re presentational S tate T ransfer ( )

33. RSS/ATOM Feed { Entries Example ATOM feed.

34. ATOMPub Feed { Entries

35. Google data APIs Protocol Feed Query { Entries

36. The Google Data Protocol REST Google Data Protocol RSS 2.0 Architecture Syndication Updates AtomPub Atom

37. The Google Data Protocol RSS 2.0 Atom(Pub) Google Data Syndication Format ✓ ✓ ✓ Queries ✓ Updates ✓ ✓ Optimistic Concurrency ✓ Authentication ✓

38. The Google Data Protocol Over 15 APIs, 1 Protocol Many Uses

39. Case Study: CalGoo

54. Questions?

55. Questions? Pamela Fox [email_address] @pamelafox More Info http://code.google.com ↶