Facebook on Rails
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The document discusses the growth and trends of Facebook, highlighting that 40% of North American internet users are on the platform, which boasts 300 million global users. It elaborates on various trends in Facebook gaming, including social interactions, customization, and revenue generation strategies. The document also touches on technical aspects of building Facebook applications using Rails and Facebooker, along with deployment on Heroku.
![Preload FQL
• Facebooker::User to query user data
• Since query can take 500ms or more, use
Preload FQL to pre-query the data
preload_fql = Hash.new
preload_fql[:preload_user_data] = {
:pattern => ".*",
:query => "SELECT name,birthday_date
FROM user WHERE uid={*user*};"
}
Facebooker::Admin.new(Facebooker::Session.create).set_app_pro
perties({:preload_fql => preload_fql.to_json})
• Obtain the preloaded data on every page:
params[:fb_sig_user_data]
Friday, October 23, 2009](https://image.slidesharecdn.com/rubytuesdayv9-091101045451-phpapp02/85/Facebook-on-Rails-14-320.jpg)
![Open Stream API
• Facebooker::Publisher for feeds/notifications
• Facebook has deprecated template bundles
• Instead use the Open Stream API:
<script>
var attachment = {'media':[{'type':'image', 'src':'http://
cardinalblue.com/images/cblue_logo_white100.png', 'href':'http://
cardinalblue.com'}]};
Facebook.streamPublish('Hello Cardinal Blue', attachment);
</script>
Friday, October 23, 2009](https://image.slidesharecdn.com/rubytuesdayv9-091101045451-phpapp02/85/Facebook-on-Rails-15-320.jpg)
Facebook on Rails
- 1. Facebook on Rails CardinalBlue info@cardinalblue.com Ruby Tuesday 2009.10.20 Friday, October 23, 2009
- 2. 40% of all Internet Users in North America are on Facebook! 300 million Facebook users around the world Friday, October 23, 2009
- 3. Facebook Trends ( ) 73 Friday, October 23, 2009
- 4. Facebook Apps Boom Friday, October 23, 2009
- 5. Friday, October 23, 2009
- 6. Demographic Trends • More female gamers • More younger (ages 8-15) gamers • More older (ages 50+) gamers Friday, October 23, 2009
- 7. FB Games are Social • Trend #1: Virtual Worlds • e.g.,YoVille, PetSociety • Trend #2: Customization & Personalization • e.g., Nintendo’s “Mii” avatars, Buddy Poke • Trend #3: Collections and Wish Lists • e.g., Mafia Wars • Trend #4: Interaction and Engagement • Farm Town, FarmVille, Barn Buddy • Trend #5: Narrative and Missions Friday, October 23, 2009
- 8. FB Games are Social • Trend #6: Gift Invites • e.g., Lil Green Patch, Give a Heart • Trend #7: Donations as Revenue • e.g., SpareChange, PayPal • Trend #8: Virtual Goods • e.g., Mafia Wars, PetSociety • Trend #9: Recruiting Users • e.g., FarmVille, Restaurant City, Tycoons • Trend #10: Capitalizing on Player Resources • e.g., All that Glitters, Photo-of-the-Day Friday, October 23, 2009
- 9. FBML Application Architecture Friday, October 23, 2009
- 10. Facebook apps on Rails • Rails 2.3.3 • Facebook API via Facebooker • Hosted on Heroku • Monitor via NewRelic Friday, October 23, 2009
- 11. User model Facebook UIDs are 64-bit, so need bigint for User#id create_table :users, :id => false do |t| t.column :id, "bigint PRIMARY KEY", :null => false ... t.timestamps end Associations can be done based on user_id create_table :balloons t.column :user_id, :bigint ... t.timestamps end Friday, October 23, 2009
- 12. Facebooker • Wrapper for Facebook API • Facebooker::User to query user data • Facebooker::Publisher for feeds/notifications Friday, October 23, 2009
- 13. Facebooker • Wrapper for Facebook API • Facebooker::User to query user data • Facebooker::Publisher for feeds/notifications Friday, October 23, 2009
- 14. Preload FQL • Facebooker::User to query user data • Since query can take 500ms or more, use Preload FQL to pre-query the data preload_fql = Hash.new preload_fql[:preload_user_data] = { :pattern => ".*", :query => "SELECT name,birthday_date FROM user WHERE uid={*user*};" } Facebooker::Admin.new(Facebooker::Session.create).set_app_pro perties({:preload_fql => preload_fql.to_json}) • Obtain the preloaded data on every page: params[:fb_sig_user_data] Friday, October 23, 2009
- 15. Open Stream API • Facebooker::Publisher for feeds/notifications • Facebook has deprecated template bundles • Instead use the Open Stream API: <script> var attachment = {'media':[{'type':'image', 'src':'http:// cardinalblue.com/images/cblue_logo_white100.png', 'href':'http:// cardinalblue.com'}]}; Facebook.streamPublish('Hello Cardinal Blue', attachment); </script> Friday, October 23, 2009
- 16. Functional tests with facebook_get test "requires-login page, logged in" do facebook_get :install assert_response :success assert_nil facebook_redirect_url end test "requires-login page, not logged in" do # access a page that requires login facebook_get :install, :fb_sig_user => nil assert_response :success assert_not_nil facebook_redirect_url assert facebook_redirect_url.match("http://www.facebook.com/install.php") end Friday, October 23, 2009
- 17. Heroku Friday, October 23, 2009
- 18. Scaled to over 10000 requests per minute Friday, October 23, 2009
- 19. Heroku features • Uses nginx, thin, postgres, Amazon EC2 • Easy Deployment: git push heroku master • Flexible Scaling: heroku dynos +1 • Free Memcache: Rails.cache • Delayed Job: facebook_session.send_notification(...) facebook_session.send_later(:send_notification,...) • New Relic Friday, October 23, 2009
- 20. New Relic Facebooker Friday, October 23, 2009
- 21. Can set up custom tracers: Facebook/query Facebook/notify Facebook/feed class NewrelicTracer def self.query yield end class << self add_method_tracer :query, 'Custom/Facebook/query' end end NewrelicTracer.query do location = facebook_session.user.current_location end Friday, October 23, 2009
- 22. Observations • Facebook is growing • Facebook games are social • Rails + Facebooker = Facebook app • Heroku is fun (and scalable) Friday, October 23, 2009
- 23. Thank you. http://cardinalblue.com/about jobs@cardinalblue.com Friday, October 23, 2009