Ruby at GitHub

Video available at https://www.youtube.com/watch?v=5vUD9Zg7gp0

Transcript

1.  RUBY at frequently asked questions about Brandon Keepers • @bkeepers
2. Hello, I am @bkeepers.
3. Contrary to popular belief, I do not keep bees.
4. 
5. Speaker Deck
6. ♡
7. 
8. Frequently Asked Questions:  Which languages are used at GitHub?  Where is Ruby not used?  Why Ruby?  Which libraries do you use?  How do you handle updates?
9.  Which languages are used at GitHub?
10.  602 github.com/github  228 inactive  42 forks  7 ignored  342 * 602 - 228 - 42 - 7 = 325 some repos met multiple conditions
11. Excluding: github.com/libgit2 github.com/boxen github.com/play github.com/[staff]
12. 58% Ruby JavaScript 11% Objective-C 8% Shell 5% CoffeeScript 5% Other 6% C 4% C# 3% Internal GitHub Projects by primary language 342 repositories
13. 33% Ruby JavaScript 15% Objective-C 13% Puppet 3% CoffeeScript 7% Other 6% 15% C C# 6% Java 2% 342 repositories Internal GitHub Projects by total bytes
14. – @rtomayko “GitHub isn’t a Rails shop, it’s not even a Ruby shop. It’s a Unix shop.”
15.  Where is Ruby not used?
16.    
17. written in Objective-C
18. written in C#
19. written in Java
20.  Numerous iOS apps written in Objective-C
21. HUBOT written in CoffeeScript
22.  unix utilities written mostly in C
23. …but what about Phone Gap? SL4A? Py4A? py2app?
24. In France, you can speak English, but it will be obvious that you are not French.
25. …but what about Ruby Motion?
26. The hardest part of learning iOS Development 3.53% Objective-C syntax iOS APIs 96.47%* *These precise numbers may not be accurate.
27.  Why Ruby?
28.  “no parents”
29. Why do you drive a Toyota?
30. taste
31. practicality
32. Ruby is not a
33. Ruby is not a
34. Ruby is not a
35. Ruby is a
36. Ruby is a
37.  What libraries do you use?
38. 153  Gemfile
44. Sinatra or Rails?
45. Sinatra 51 projects Rails 30 projects 9 projects both
46. 8 MB both Rails 12.1 MB Sinatra 10.75MB
47. test/unit, rspec or minitest?
48. Internal GitHub Projects test frameworks 45% test/unit rspec 43% minitest 13%
49.  How do you handle updates?
50.  feature flags
52. module FeatureFlags def preview_features? staff? end def time_travel_enabled? preview_features? end end app/concerns/feature_flags.rb
53. class User < ActiveRecord::Base include FeatureFlags end app/models/user.rb module FeatureFlags def preview_features? staff? end def time_travel_enabled? preview_features? end end app/concerns/feature_flags.rb
54. class User < ActiveRecord::Base include FeatureFlags end app/models/user.rb module FeatureFlags def preview_features? staff? end def time_travel_enabled? preview_features? end end app/concerns/feature_flags.rb class ApplicationController flags = FeatureFlags.public_instance_methods delegate *flags, :to => :current_user, :allow_nil => true helper_method *flags end app/controllers/application_controller.rb
56. <%- if time_travel_enabled? -%> <%= link_to 'Time Travel', time_travel_path %> <%- end -%> app/views/home/index.html.erb
57. <%- if time_travel_enabled? -%> <%= link_to 'Time Travel', time_travel_path %> <%- end -%> app/views/home/index.html.erb class TimeTravelController < ApplicationController before_filter :ensure_time_travel_enabled def ensure_time_travel_enabled not_found unless time_travel_enabled? end end app/controllers/time_travel_controller.rb
58. module FeatureFlags def preview_features? staff? end def time_travel_enabled? preview_features? true end end app/concerns/feature_flags.rb Launch Day
59.  github.com/jnunemaker/flipper  github.com/jamesgolick/rollout
60.  Ruby 1.9 2.0
61. The path to 1.9
62. 1. Run CI against 1.8 & 1.9 The path to 1.9
63. 1. Run CI against 1.8 & 1.9 2.? 3.Profit The path to 1.9
64. The path to 1.9 1. Run CI against 1.8 & 1.9 2.@tmm1 3.Profit
65. 1. Run CI against 1.8, 1.9 & 2.0 2.@tmm1 3.Profit The path to 2.0
66. – @tmm1 “Compared to REE, average cpu response time for browser requests last week was reduced by over 25ms. The 99th percentile cpu response time for browser requests was reduced by over 125ms!”
68.  Rails 3
69.  github.com/github/rails
70.  backport in progress
71.  Other Questions? @bkeepers https://speakerdeck.com/bkeepers/ruby-at-github