The document provides an overview of OpenSocial, a set of APIs for building social applications across various platforms, managed by the OpenSocial Foundation. It includes the evolution of OpenSocial versions, development tools, best practices for performance, and resources for developers. Advanced topics on server-side communication and client libraries for various programming languages are also covered.

1. A Developer’s Overview Chris Schalk, Google Developer Advocate Sept 4, 2009

2. Agenda Introduction OpenSocial History, Background, Roadmap OpenSocial Developer Basics OpenSocial Development Tools Advanced Developer Topics OpenSocial.org

3. A Brief Introduction to OpenSocial

4. What is OpenSocial? “ OpenSocial defines a common set of APIs based on Open Standards for building social applications across multiple websites”

5. Why OpenSocial? Before OpenSocial…

6. What is OpenSocial? Standards Based

7. What is OpenSocial?

8. Who owns OpenSocial? ?

9. Who owns OpenSocial? ? OpenSocial is managed under the auspices of the “OpenSocial Foundation” - http://www.opensocial.org No!

10. Who's Using it? and many more...

11. Who's Using it?

12. OpenSocial Roadmap Version 0.5 was released in a “developer release” on Nov 1st 2007. First “sandbox” was made available on Orkut Version 0.6 was released in December 2007 Initial version of Shindig server software was launched as Apache incubator project Other sandboxes came live - Hi5, Ning, Plaxo … Version 0.7 (production) was released in January 2008 MySpace, Hi5, Orkut began running 0.7

13. OpenSocial Roadmap Version 0.8/0.8.1 Released in late 2008 Contains a RESTful & RPC protocol OpenSocial Client Libraries launched in Dec 08

14. OpenSocial 0.9 (Current) Key Goal: Enable a faster development experience that is both secure and efficient Core principles: Client-side and server-side processing Standard set of tags with extensibility model Example: <os:ShowPerson>

15. Developing OpenSocial Applications

16. Demonstration Building simple OpenSocial Client Applications

17. OpenSocial Developer Tools

18. OpenSocial Developer Tools OSDA - ‘OpenSocial DevApp’ An OpenSocial app that provides the ability to build and execute OpenSocial apps within an OpenSocial container. Gadget Editor A new, ultra simple online gadget editor OSDE - ‘OpenSocial Development Environment’ An Eclipse plugin that allows for OpenSocial application development completely offline

19. Demo - OSDA ‘OpenSocial DevApp’

20. Demo - Gadget Editor

21. Demo - OSDE

22. Advanced Developer Topics

23. Advanced Developer Topics Performance - Designing Apps for speed and scale Gadgets are Web apps too! Use tools like Firebug, Yslow (Firefox), Web Inspector (Safari), HttpWatch (Internet Explorer) Minify/compact JavaScript, CSS Image “spriting” to reduce requests Measure latency using JavaScript OpenSocial development best practices Use batch requests Take advantage of new 0.9 features … http://code.google.com/events/io/sessions/DesigningOpenSocialAppsSpeedScale.html (Just google “OpenSocial Apps Speed Scale”)

24. OpenSocial Server-Side development

25. OpenSocial Server-Side Development OpenSocial’s RESTful/RPC protocol has been available since version 0.8 Allows for server-to-server communication with OpenSocial container OpenSocial REST/RPC Client Libraries simplify communication with OS container Integrated with Open Standard, OAuth, for secure Web transactions

26. Introducing the OpenSocial Client Libraries http://code.google.com/p/opensocial-php-client http://code.google.com/p/opensocial-ruby-client http://code.google.com/p/opensocial-python-client http://code.google.com/p/opensocial-java-client A set of client libraries for that enable direct communication to an OpenSocial server. Client libraries exist for PHP, Ruby, Python and Java Supports both REST and RPC protocols Documentation Wiki pages Sample applications provided

27. Demos Using OSDE to build Java RESTful client applications New tutorials Using 2-legged OAuth in a WebApp Using 3-legged OAuth in a WebApp

28. OpenSocial.org

29. OpenSocial.org http://opensocial.org

30. Great documentation resource

31. The OpenSocial specification process

32. Many developer resources

33. Useful OpenSocial Links Homepage & specification: http://www. opensocial .org OpenSocial Wiki! (Compliancy, Cross container development …) http://wiki. opensocial .org Get on the forums: http://groups. google . com/group/opensocial Help shape the specification: http://groups. google . com/group/opensocial-and-gadgets-spec/ Check out OSDE: http://code. google . com/p/opensocial-development-environment/ Check out OSDA: http://osda.appspot.com

34. Questions Q&A Chris Schalk Twitter: @cschalk [email_address]

35. Thank You! 감사합니다 !