RubyConf China 17/11/2012 - [UNCUT] Become a Better Developer You Can

Uncut version. Video: https://www.youtube.com/watch?v=DeBsmdDmB9A

Transcript

1. @fredwu Development Team Lead 1 Saturday, 17 November 12
2. “BECOME A BETTER DEVELOPER YOU CAN” - Yoda 2 Saturday, 17 November 12
3. MY BACKGROUND 3 Saturday, 17 November 12
4. 4 Saturday, 17 November 12
5. 4 Saturday, 17 November 12
6. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) 4 Saturday, 17 November 12
7. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem 4 Saturday, 17 November 12
8. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem • 1997 Made my first ever HTML web page in Microsoft Frontpage Express 4 Saturday, 17 November 12
9. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem • 1997 Made my first ever HTML web page in Microsoft Frontpage Express • 1998 Moved to Australia 4 Saturday, 17 November 12
10. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem • 1997 Made my first ever HTML web page in Microsoft Frontpage Express • 1998 Moved to Australia • 2001 Started playing with Perl (雷傲), ASP (动⺴⽹网) and PHP (Discuz!) forum software 4 Saturday, 17 November 12
11. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem • 1997 Made my first ever HTML web page in Microsoft Frontpage Express • 1998 Moved to Australia • 2001 Started playing with Perl (雷傲), ASP (动⺴⽹网) and PHP (Discuz!) forum software • 2004 Started learning PHP and JavaScript in TAFE (pre-university bridge) 4 Saturday, 17 November 12
12. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem • 1997 Made my first ever HTML web page in Microsoft Frontpage Express • 1998 Moved to Australia • 2001 Started playing with Perl (雷傲), ASP (动⺴⽹网) and PHP (Discuz!) forum software • 2004 Started learning PHP and JavaScript in TAFE (pre-university bridge) • 2006 Started working part-time as a junior developer whilst studying in university 4 Saturday, 17 November 12
13. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem • 1997 Made my first ever HTML web page in Microsoft Frontpage Express • 1998 Moved to Australia • 2001 Started playing with Perl (雷傲), ASP (动⺴⽹网) and PHP (Discuz!) forum software • 2004 Started learning PHP and JavaScript in TAFE (pre-university bridge) • 2006 Started working part-time as a junior developer whilst studying in university • 2006 Discovered Ruby and Ruby on Rails, and switched to OS X because of Textmate 4 Saturday, 17 November 12
14. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem • 1997 Made my first ever HTML web page in Microsoft Frontpage Express • 1998 Moved to Australia • 2001 Started playing with Perl (雷傲), ASP (动⺴⽹网) and PHP (Discuz!) forum software • 2004 Started learning PHP and JavaScript in TAFE (pre-university bridge) • 2006 Started working part-time as a junior developer whilst studying in university • 2006 Discovered Ruby and Ruby on Rails, and switched to OS X because of Textmate • 2008 Started professionally as a web developer (HTML, CSS, PHP and JavaScript) 4 Saturday, 17 November 12
15. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem • 1997 Made my first ever HTML web page in Microsoft Frontpage Express • 1998 Moved to Australia • 2001 Started playing with Perl (雷傲), ASP (动⺴⽹网) and PHP (Discuz!) forum software • 2004 Started learning PHP and JavaScript in TAFE (pre-university bridge) • 2006 Started working part-time as a junior developer whilst studying in university • 2006 Discovered Ruby and Ruby on Rails, and switched to OS X because of Textmate • 2008 Started professionally as a web developer (HTML, CSS, PHP and JavaScript) • 2010 Started programming in Ruby full time (mostly) 4 Saturday, 17 November 12
16. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem • 1997 Made my first ever HTML web page in Microsoft Frontpage Express • 1998 Moved to Australia • 2001 Started playing with Perl (雷傲), ASP (动⺴⽹网) and PHP (Discuz!) forum software • 2004 Started learning PHP and JavaScript in TAFE (pre-university bridge) • 2006 Started working part-time as a junior developer whilst studying in university • 2006 Discovered Ruby and Ruby on Rails, and switched to OS X because of Textmate • 2008 Started professionally as a web developer (HTML, CSS, PHP and JavaScript) • 2010 Started programming in Ruby full time (mostly) • 2010 Started contributing to many open source ruby projects, including Ruby on Rails 4 Saturday, 17 November 12
17. 2004 2005 2006 2007 2008 2009 2010 2011 2012 JavaScript PHP Ruby AREAS OF FOCUS 5 Saturday, 17 November 12
18. AUSTRALIA HAS A STRONG RUBY COMMUNITY 6 Saturday, 17 November 12
19. 7 Saturday, 17 November 12
20. Dr Nic Williams Author of Rails Textmate bundle, works at Engine Yard Ryan Bigg Author of Rails 3 in Action, 2011 Ruby Hero Pat Allan Author of Thinking Sphinx, 2009 Ruby Hero Xavier Shay Author of Cane and Enki, works at Square Ben Schwarz Member of W3C’s CSS Working Group Darcy Laycock Author of API Smith, 2011 Ruby Hero Justin French Author of Formtastic Daniel Neighman Author of Warden, works at Square Ben Hoskings Author of Babushka Marcus Crafter Author of Sprinkle Charlie Somerville Author of Slash language, a talented 18 year old! Jack Chen (Chendo) Contributor to iTerm2 Mikel Lindsaar Author of Mail, rails core committer John Barton Cofounder of Goodfil.ms, dev manager of Envato for 3+ years Paul Annesley Built 99designs, works at SitePoint Gareth Townsend Founder of Melbourne Cocoaheads Ivan Vanderbyl Founder of Crashlog Glen Maddern Cofounder of Goodfil.ms Alan Harper Author of Rubyzip James Healy Author of PDF::Reader, maintainer of Prawn Florian Hanke Author of Picky 7 Saturday, 17 November 12
21. • General Tips and Thoughts • Code Tips and Examples • Q & A (提问时间，中⽂文) ABOUT THIS TALK 8 Saturday, 17 November 12
22. THREE STAGES OF ... 9 Saturday, 17 November 12
23. THREE STAGES OF PHOTOGRAPHY 10 Saturday, 17 November 12
24. THREE STAGES OF PHOTOGRAPHY 1. You discuss camera equipment. 三流摄影师谈器材。 10 Saturday, 17 November 12
25. THREE STAGES OF PHOTOGRAPHY 1. You discuss camera equipment. 三流摄影师谈器材。 2. You discuss shooting techniques. ⼆二流摄影师谈技术。 10 Saturday, 17 November 12
26. THREE STAGES OF PHOTOGRAPHY 1. You discuss camera equipment. 三流摄影师谈器材。 2. You discuss shooting techniques. ⼆二流摄影师谈技术。 3. You discuss creative and thought processes. ⼀一流摄影师谈思想。 10 Saturday, 17 November 12
27. THREE STAGES OF PROGRAMMERS 11 Saturday, 17 November 12
28. THREE STAGES OF PROGRAMMERS 1. You discuss tools and editors. 三流程序员谈⼯工具。 11 Saturday, 17 November 12
29. THREE STAGES OF PROGRAMMERS 1. You discuss tools and editors. 三流程序员谈⼯工具。 2. You discuss programming techniques. ⼆二流程序员谈技术。 11 Saturday, 17 November 12
30. THREE STAGES OF PROGRAMMERS 1. You discuss tools and editors. 三流程序员谈⼯工具。 2. You discuss programming techniques. ⼆二流程序员谈技术。 3. You discuss creative and thought processes. ⼀一流程序员谈思想。 11 Saturday, 17 November 12
31. THREE STAGES OF SOFTWARE DEVELOPMENT 12 Saturday, 17 November 12
32. THREE STAGES OF SOFTWARE DEVELOPMENT 1. You are being paid for what you do. 三流程序员提供汗⽔水。 12 Saturday, 17 November 12
33. THREE STAGES OF SOFTWARE DEVELOPMENT 1. You are being paid for what you do. 三流程序员提供汗⽔水。 2. You are being paid for what you know. ⼆二流程序员提供脑⼒力。 12 Saturday, 17 November 12
34. THREE STAGES OF SOFTWARE DEVELOPMENT 1. You are being paid for what you do. 三流程序员提供汗⽔水。 2. You are being paid for what you know. ⼆二流程序员提供脑⼒力。 3. You are being paid for your experience. ⼀一流程序员提供经验。 12 Saturday, 17 November 12
35. DISCLAIMER I am still a n00b. ⼩小⼩小菜⻦鸟。 But I care, so I share. 抛砖引⽟玉。 13 Saturday, 17 November 12
36. WHERE TO START 14 Saturday, 17 November 12
37. • What interests you? WHERE TO START 14 Saturday, 17 November 12
38. • What interests you? • Product? 产品控 WHERE TO START 14 Saturday, 17 November 12
39. • What interests you? • Product? 产品控 • Technology? 技术控 WHERE TO START 14 Saturday, 17 November 12
40. • What interests you? • Product? 产品控 • Technology? 技术控 • Maths and algorithm? 算法控 WHERE TO START 14 Saturday, 17 November 12
41. • What interests you? • Product? 产品控 • Technology? 技术控 • Maths and algorithm? 算法控 • Money? ⾦金钱控 WHERE TO START 14 Saturday, 17 November 12
42. • What interests you? • Product? 产品控 • Technology? 技术控 • Maths and algorithm? 算法控 • Money? ⾦金钱控 • Choose where to work wisely WHERE TO START 14 Saturday, 17 November 12
43. • What interests you? • Product? 产品控 • Technology? 技术控 • Maths and algorithm? 算法控 • Money? ⾦金钱控 • Choose where to work wisely • But it probably doesn’t matter (as much) for the first year or two WHERE TO START 14 Saturday, 17 November 12
44. THE ART OF ASKING QUESTIONS 15 Saturday, 17 November 12
45. THE ART OF ASKING QUESTIONS • Don’t be vague (“Can I use Rails for XYZ?” is not a good question). 模棱两可惹⼈人厌。 15 Saturday, 17 November 12
46. THE ART OF ASKING QUESTIONS • Don’t be vague (“Can I use Rails for XYZ?” is not a good question). 模棱两可惹⼈人厌。 • Give context and details (e.g. error stack trace). 提供上下⽂文与出错报告。 15 Saturday, 17 November 12
47. THE ART OF ASKING QUESTIONS • Don’t be vague (“Can I use Rails for XYZ?” is not a good question). 模棱两可惹⼈人厌。 • Give context and details (e.g. error stack trace). 提供上下⽂文与出错报告。 • Show that you’ve done your research. 必要的功课先做好。 15 Saturday, 17 November 12
48. THE ART OF ASKING QUESTIONS • Don’t be vague (“Can I use Rails for XYZ?” is not a good question). 模棱两可惹⼈人厌。 • Give context and details (e.g. error stack trace). 提供上下⽂文与出错报告。 • Show that you’ve done your research. 必要的功课先做好。 • Respect the answers and comments offered to you. 尊重别⼈人给出的答案和意⻅见。 15 Saturday, 17 November 12
49. THE ART OF ASKING QUESTIONS • Don’t be vague (“Can I use Rails for XYZ?” is not a good question). 模棱两可惹⼈人厌。 • Give context and details (e.g. error stack trace). 提供上下⽂文与出错报告。 • Show that you’ve done your research. 必要的功课先做好。 • Respect the answers and comments offered to you. 尊重别⼈人给出的答案和意⻅见。 • Be mindful of how many questions you ask. 短时间内不要提⼤大量的问题。 15 Saturday, 17 November 12
50. THE ART OF ASKING QUESTIONS • Don’t be vague (“Can I use Rails for XYZ?” is not a good question). 模棱两可惹⼈人厌。 • Give context and details (e.g. error stack trace). 提供上下⽂文与出错报告。 • Show that you’ve done your research. 必要的功课先做好。 • Respect the answers and comments offered to you. 尊重别⼈人给出的答案和意⻅见。 • Be mindful of how many questions you ask. 短时间内不要提⼤大量的问题。 • Don’t be a Help Vampire! http://slash7.com/2006/12/22/vampires/ 15 Saturday, 17 November 12
51. BE MINDFUL WHAT YOU SAY 16 Saturday, 17 November 12
52. BE MINDFUL WHAT YOU SAY • Be nice! Attacking people on Twitter or Weibo is not cool. 基本道德：不攻击他⼈人。 16 Saturday, 17 November 12
53. BE MINDFUL WHAT YOU SAY • Be nice! Attacking people on Twitter or Weibo is not cool. 基本道德：不攻击他⼈人。 • Make sure you checked your facts. 事实胜于雄辩。 16 Saturday, 17 November 12
54. BE MINDFUL WHAT YOU SAY • Be nice! Attacking people on Twitter or Weibo is not cool. 基本道德：不攻击他⼈人。 • Make sure you checked your facts. 事实胜于雄辩。 • Deflect office politics. 规避办公室政治。 16 Saturday, 17 November 12
55. BE MINDFUL WHAT YOU SAY • Be nice! Attacking people on Twitter or Weibo is not cool. 基本道德：不攻击他⼈人。 • Make sure you checked your facts. 事实胜于雄辩。 • Deflect office politics. 规避办公室政治。 • Don’t spread pirate links! 不散播盗版链接。 16 Saturday, 17 November 12
56. BE MINDFUL WHAT YOU SAY • Be nice! Attacking people on Twitter or Weibo is not cool. 基本道德：不攻击他⼈人。 • Make sure you checked your facts. 事实胜于雄辩。 • Deflect office politics. 规避办公室政治。 • Don’t spread pirate links! 不散播盗版链接。 • Don’t waste energy in endless debates. 不参与⽆无谓的争辩。 Credit: xkcd.com 16 Saturday, 17 November 12
57. ADJUST CONFIDENCE LEVEL 17 Saturday, 17 November 12
58. ADJUST CONFIDENCE LEVEL • Aim too low you’ll never improve. ⺫⽬目标定太低，难以进步。 17 Saturday, 17 November 12
59. ADJUST CONFIDENCE LEVEL • Aim too low you’ll never improve. ⺫⽬目标定太低，难以进步。 • Aim too high you’ll be depressed. ⺫⽬目标定太⾼高，永追不上。 17 Saturday, 17 November 12
60. ADJUST CONFIDENCE LEVEL • Aim too low you’ll never improve. ⺫⽬目标定太低，难以进步。 • Aim too high you’ll be depressed. ⺫⽬目标定太⾼高，永追不上。 • So make your goals @variables rather than CONSTANTS. 把⺫⽬目标设为变量，⽽而⾮非常量。 17 Saturday, 17 November 12
61. THOUGHTS ON SOFTWARE DEVELOPMENT 18 Saturday, 17 November 12
62. THOUGHTS ON SOFTWARE DEVELOPMENT • Second system syndrome - avoid total rewrites. 第⼆二系统综合症——避免重写。 18 Saturday, 17 November 12
63. THOUGHTS ON SOFTWARE DEVELOPMENT • Second system syndrome - avoid total rewrites. 第⼆二系统综合症——避免重写。 • Software engineering is like playing Starcraft - always check your mini-map. 软件⼯工程有如星际争霸——需经常关注迷你地图，以⼤大局为重。 18 Saturday, 17 November 12
64. THOUGHTS ON SOFTWARE DEVELOPMENT • Second system syndrome - avoid total rewrites. 第⼆二系统综合症——避免重写。 • Software engineering is like playing Starcraft - always check your mini-map. 软件⼯工程有如星际争霸——需经常关注迷你地图，以⼤大局为重。 • Experience is as important as talent, if not more important. 经验与天赋同重要。 18 Saturday, 17 November 12
65. THOUGHTS ON SOFTWARE DEVELOPMENT • Second system syndrome - avoid total rewrites. 第⼆二系统综合症——避免重写。 • Software engineering is like playing Starcraft - always check your mini-map. 软件⼯工程有如星际争霸——需经常关注迷你地图，以⼤大局为重。 • Experience is as important as talent, if not more important. 经验与天赋同重要。 • Technical debt is a debt, the longer you wait, the more interests you pay. 技术债务——拖⽋欠越久，偿还越多。 18 Saturday, 17 November 12
66. THOUGHTS ON SOFTWARE DEVELOPMENT • Second system syndrome - avoid total rewrites. 第⼆二系统综合症——避免重写。 • Software engineering is like playing Starcraft - always check your mini-map. 软件⼯工程有如星际争霸——需经常关注迷你地图，以⼤大局为重。 • Experience is as important as talent, if not more important. 经验与天赋同重要。 • Technical debt is a debt, the longer you wait, the more interests you pay. 技术债务——拖⽋欠越久，偿还越多。 • Choose the application architecture wisely. 谨慎选择软件架构。 18 Saturday, 17 November 12
67. APPLICATION ARCHITECTURE SHOWCASE 19 Saturday, 17 November 12
68. APPLICATION ARCHITECTURE SHOWCASE • We need a profile system to hold user data. ⽤用户帐户系统。 19 Saturday, 17 November 12
69. APPLICATION ARCHITECTURE SHOWCASE • We need a profile system to hold user data. ⽤用户帐户系统。 • The profile system will potentially be used standalone. ⽤用户帐户系统未来可能会被独⽴立使⽤用。 19 Saturday, 17 November 12
70. APPLICATION ARCHITECTURE SHOWCASE • We need a profile system to hold user data. ⽤用户帐户系统。 • The profile system will potentially be used standalone. ⽤用户帐户系统未来可能会被独⽴立使⽤用。 • We need plugin-able “modules”. 需可插⼊入式模块系统。 19 Saturday, 17 November 12
71. APPLICATION ARCHITECTURE SHOWCASE • We need a profile system to hold user data. ⽤用户帐户系统。 • The profile system will potentially be used standalone. ⽤用户帐户系统未来可能会被独⽴立使⽤用。 • We need plugin-able “modules”. 需可插⼊入式模块系统。 • There will potentially be 3rd party modules. 未来可能会有第三⽅方开发的模块。 19 Saturday, 17 November 12
72. APPLICATION ARCHITECTURE SHOWCASE • We need a profile system to hold user data. ⽤用户帐户系统。 • The profile system will potentially be used standalone. ⽤用户帐户系统未来可能会被独⽴立使⽤用。 • We need plugin-able “modules”. 需可插⼊入式模块系统。 • There will potentially be 3rd party modules. 未来可能会有第三⽅方开发的模块。 • Of course, the development timeline is tight. 开发周期很紧凑。 19 Saturday, 17 November 12
73. SOLUTION I THE PERFECT WAY Profile (API) Platform Module Module Module 20 Saturday, 17 November 12
74. PERFECT? NO! 21 Saturday, 17 November 12
75. PERFECT? NO! • Longer development time. 开发周期过⻓长。 21 Saturday, 17 November 12
76. PERFECT? NO! • Longer development time. 开发周期过⻓长。 • Can’t guarantee the usefulness of the API layer for 3rd party developers. 不可预知 API 层在未来是否还可有效利⽤用。 21 Saturday, 17 November 12
77. PERFECT? NO! • Longer development time. 开发周期过⻓长。 • Can’t guarantee the usefulness of the API layer for 3rd party developers. 不可预知 API 层在未来是否还可有效利⽤用。 • More complexity == more chances to screw up. 系统越复杂，越容易出错。 21 Saturday, 17 November 12
78. SOLUTION II THE EASY WAY Platform Profile Module Module Module 22 Saturday, 17 November 12
79. EASY, BUT FOR HOW LONG? 23 Saturday, 17 November 12
80. EASY, BUT FOR HOW LONG? • One app is more difficult to scale out. 单⼀一系统相对较难向外扩展。 23 Saturday, 17 November 12
81. EASY, BUT FOR HOW LONG? • One app is more difficult to scale out. 单⼀一系统相对较难向外扩展。 • It is also more difficult to assign tasks. 单⼀一系统相对较难安排团队成员任务。 23 Saturday, 17 November 12
82. EASY, BUT FOR HOW LONG? • One app is more difficult to scale out. 单⼀一系统相对较难向外扩展。 • It is also more difficult to assign tasks. 单⼀一系统相对较难安排团队成员任务。 • It is more likely to have leaky code. 单⼀一系统相对更难有效封装。 23 Saturday, 17 November 12
83. SOLUTION III THE CHOSEN WAY Profile (API) Platform Module Module Module 24 Saturday, 17 November 12
84. A BALANCED SOLUTION IS A GOOD SOLUTION 25 Saturday, 17 November 12
85. A BALANCED SOLUTION IS A GOOD SOLUTION • Don’t over-engineer. 避免过度⼯工程。 25 Saturday, 17 November 12
86. A BALANCED SOLUTION IS A GOOD SOLUTION • Don’t over-engineer. 避免过度⼯工程。 • Good degree of separation of concern. 注重关注点分离。 25 Saturday, 17 November 12
87. A BALANCED SOLUTION IS A GOOD SOLUTION • Don’t over-engineer. 避免过度⼯工程。 • Good degree of separation of concern. 注重关注点分离。 • Internal interfaces are easier than external APIs: 内部接⼝口相对外部 API 更易开发： ‣ @gateway ||= PlatformModuleGateway.new(args) ‣ mod = module_controller(module_name).new(args) ‣ mod.validate_input ‣ mod.render_view 25 Saturday, 17 November 12
88. OOPS! 26 Saturday, 17 November 12
89. OOPS! 27 Saturday, 17 November 12
90. Rackspace Private Cloud VM External Providers NGINX Front End HTTP SERVER (Long-polling, Cache, SSL) UNICORN Worker 1 Worker 2 Worker 3 Worker N Request Router Auth Admin Controller Workflow Controler User Data Source (Rails engine modules) Gateway M V C M V C M V C M V C M V C Mailer MySQL Application Server Master Sendmail Active Record ORM UNICORN Worker 1 Worker 2 Worker N Application Server Master Group Manager Roles Manager User Profile Manager Authentication System Permissions Management CRON DFAT Scraper Master Worker Event Machine Country Scraper Regional Scraper Local DB Server Active Record ORM Data Mapper ORM Profile TMP Firewall Firewall UNIX Socket HTTP JSON HTTPS UNIX Socket Client HART Aviation API JSON (SSL) CDC VISA Link 28 Saturday, 17 November 12
91. Rackspace Private Cloud VM External Providers NGINX Front End HTTP SERVER (Long-polling, Cache, SSL) UNICORN Worker 1 Worker 2 Worker 3 Worker N Request Router Auth Admin Controller Workflow Controler User Data Source (Rails engine modules) Gateway M V C M V C M V C M V C M V C Mailer MySQL Application Server Master Sendmail Active Record ORM UNICORN Worker 1 Worker 2 Worker N Application Server Master Group Manager Roles Manager User Profile Manager Authentication System Permissions Management CRON DFAT Scraper Master Worker Event Machine Country Scraper Regional Scraper Local DB Server Active Record ORM Data Mapper ORM Profile TMP Firewall Firewall UNIX Socket HTTP JSON HTTPS UNIX Socket Client HART Aviation API JSON (SSL) CDC VISA Link 28 Saturday, 17 November 12
92. Rackspace Private Cloud VM External Providers NGINX Front End HTTP SERVER (Long-polling, Cache, SSL) UNICORN Worker 1 Worker 2 Worker 3 Worker N Request Router Auth Admin Controller Workflow Controler User Data Source (Rails engine modules) Gateway M V C M V C M V C M V C M V C Mailer MySQL Application Server Master Sendmail Active Record ORM UNICORN Worker 1 Worker 2 Worker N Application Server Master Group Manager Roles Manager User Profile Manager Authentication System Permissions Management CRON DFAT Scraper Master Worker Event Machine Country Scraper Regional Scraper Local DB Server Active Record ORM Data Mapper ORM Profile TMP Firewall Firewall UNIX Socket HTTP JSON HTTPS UNIX Socket Client HART Aviation API JSON (SSL) CDC VISA Link 28 Saturday, 17 November 12
93. Rackspace Private Cloud VM External Providers NGINX Front End HTTP SERVER (Long-polling, Cache, SSL) UNICORN Worker 1 Worker 2 Worker 3 Worker N Request Router Auth Admin Controller Workflow Controler User Data Source (Rails engine modules) Gateway M V C M V C M V C M V C M V C Mailer MySQL Application Server Master Sendmail Active Record ORM UNICORN Worker 1 Worker 2 Worker N Application Server Master Group Manager Roles Manager User Profile Manager Authentication System Permissions Management CRON DFAT Scraper Master Worker Event Machine Country Scraper Regional Scraper Local DB Server Active Record ORM Data Mapper ORM Profile TMP Firewall Firewall UNIX Socket HTTP JSON HTTPS UNIX Socket Client HART Aviation API JSON (SSL) CDC VISA Link 28 Saturday, 17 November 12
94. Rackspace Private Cloud VM External Providers NGINX Front End HTTP SERVER (Long-polling, Cache, SSL) UNICORN Worker 1 Worker 2 Worker 3 Worker N Request Router Auth Admin Controller Workflow Controler User Data Source (Rails engine modules) Gateway M V C M V C M V C M V C M V C Mailer MySQL Application Server Master Sendmail Active Record ORM UNICORN Worker 1 Worker 2 Worker N Application Server Master Group Manager Roles Manager User Profile Manager Authentication System Permissions Management CRON DFAT Scraper Master Worker Event Machine Country Scraper Regional Scraper Local DB Server Active Record ORM Data Mapper ORM Profile TMP Firewall Firewall UNIX Socket HTTP JSON HTTPS UNIX Socket Client HART Aviation API JSON (SSL) CDC VISA Link 28 Saturday, 17 November 12
95. Rackspace Private Cloud VM External Providers NGINX Front End HTTP SERVER (Long-polling, Cache, SSL) UNICORN Worker 1 Worker 2 Worker 3 Worker N Request Router Auth Admin Controller Workflow Controler User Data Source (Rails engine modules) Gateway M V C M V C M V C M V C M V C Mailer MySQL Application Server Master Sendmail Active Record ORM UNICORN Worker 1 Worker 2 Worker N Application Server Master Group Manager Roles Manager User Profile Manager Authentication System Permissions Management CRON DFAT Scraper Master Worker Event Machine Country Scraper Regional Scraper Local DB Server Active Record ORM Data Mapper ORM Profile TMP Firewall Firewall UNIX Socket HTTP JSON HTTPS UNIX Socket Client HART Aviation API JSON (SSL) CDC VISA Link 28 Saturday, 17 November 12
96. Rackspace Private Cloud VM External Providers NGINX Front End HTTP SERVER (Long-polling, Cache, SSL) UNICORN Worker 1 Worker 2 Worker 3 Worker N Request Router Auth Admin Controller Workflow Controler User Data Source (Rails engine modules) Gateway M V C M V C M V C M V C M V C Mailer MySQL Application Server Master Sendmail Active Record ORM UNICORN Worker 1 Worker 2 Worker N Application Server Master Group Manager Roles Manager User Profile Manager Authentication System Permissions Management CRON DFAT Scraper Master Worker Event Machine Country Scraper Regional Scraper Local DB Server Active Record ORM Data Mapper ORM Profile TMP Firewall Firewall UNIX Socket HTTP JSON HTTPS UNIX Socket Client HART Aviation API JSON (SSL) CDC VISA Link 28 Saturday, 17 November 12
97. Rackspace Private Cloud VM External Providers NGINX Front End HTTP SERVER (Long-polling, Cache, SSL) UNICORN Worker 1 Worker 2 Worker 3 Worker N Request Router Auth Admin Controller Workflow Controler User Data Source (Rails engine modules) Gateway M V C M V C M V C M V C M V C Mailer MySQL Application Server Master Sendmail Active Record ORM UNICORN Worker 1 Worker 2 Worker N Application Server Master Group Manager Roles Manager User Profile Manager Authentication System Permissions Management CRON DFAT Scraper Master Worker Event Machine Country Scraper Regional Scraper Local DB Server Active Record ORM Data Mapper ORM Profile TMP Firewall Firewall UNIX Socket HTTP JSON HTTPS UNIX Socket Client HART Aviation API JSON (SSL) CDC VISA Link 28 Saturday, 17 November 12
98. CRAP PRINCIPLES 29 Saturday, 17 November 12
99. 30 Saturday, 17 November 12
100. Contrast 对⽐比度 30 Saturday, 17 November 12
101. Contrast 对⽐比度 Repetition 重复度 30 Saturday, 17 November 12
102. Contrast 对⽐比度 Repetition 重复度 Alignment 排列度 30 Saturday, 17 November 12
103. Contrast 对⽐比度 Repetition 重复度 Alignment 排列度 Proximity 接近度 30 Saturday, 17 November 12
104. SOLID PRINCIPLES 31 Saturday, 17 November 12
105. 32 Saturday, 17 November 12
106. Single responsibility 单⼀一责任 32 Saturday, 17 November 12
107. Single responsibility 单⼀一责任 Open/close 开闭 32 Saturday, 17 November 12
108. Single responsibility 单⼀一责任 Open/close 开闭 Liskov substitution ⾥里⽒氏替换 32 Saturday, 17 November 12
109. Single responsibility 单⼀一责任 Open/close 开闭 Liskov substitution ⾥里⽒氏替换 Interface segregation 接⼝口分离 32 Saturday, 17 November 12
110. Single responsibility 单⼀一责任 Open/close 开闭 Liskov substitution ⾥里⽒氏替换 Interface segregation 接⼝口分离 Dependency inversion 依赖倒置 32 Saturday, 17 November 12
111. FOUR SIMPLE RULES 33 Saturday, 17 November 12
112. 34 Saturday, 17 November 12
113. Passes all the tests. 34 Saturday, 17 November 12
114. Passes all the tests. Contains no duplication. 34 Saturday, 17 November 12
115. Passes all the tests. Contains no duplication. Expresses the intent. 34 Saturday, 17 November 12
116. Passes all the tests. Contains no duplication. Expresses the intent. Minimises the number of classes and methods. 34 Saturday, 17 November 12
117. Until you have learnt Ruby first. DO NOT LEARN RAILS 35 Saturday, 17 November 12
118. AGILE? TDD? 36 Saturday, 17 November 12
119. ONE SIZE FITS ALL? 37 Saturday, 17 November 12
120. ONE SIZE FITS ALL? • Scrum, Kanban, XP, Lean, Crystal... whatever... 37 Saturday, 17 November 12
121. ONE SIZE FITS ALL? • Scrum, Kanban, XP, Lean, Crystal... whatever... • TDD? BDD? Test first, or verify later? 37 Saturday, 17 November 12
122. ONE SIZE FITS ALL? • Scrum, Kanban, XP, Lean, Crystal... whatever... • TDD? BDD? Test first, or verify later? • If no one shoe/shirt/hat size can fit all, then why should development processes be any different? 37 Saturday, 17 November 12
123. ONE SIZE FITS ALL? • Scrum, Kanban, XP, Lean, Crystal... whatever... • TDD? BDD? Test first, or verify later? • If no one shoe/shirt/hat size can fit all, then why should development processes be any different? • There will always be people trying to sell you something. 37 Saturday, 17 November 12
124. ONE SIZE FITS ALL? • Scrum, Kanban, XP, Lean, Crystal... whatever... • TDD? BDD? Test first, or verify later? • If no one shoe/shirt/hat size can fit all, then why should development processes be any different? • There will always be people trying to sell you something. • Use whatever works for your team, your project and your culture! 37 Saturday, 17 November 12
125. Practice, Practice and Practice FAST TRACK 38 Saturday, 17 November 12
126. CONTRIBUTE TO OPEN SOURCE PROJECTS 39 Saturday, 17 November 12
127. CONTRIBUTE TO OPEN SOURCE PROJECTS • Reading code is just as important as writing code. 阅读代码与编写代码同重要。 39 Saturday, 17 November 12
128. CONTRIBUTE TO OPEN SOURCE PROJECTS • Reading code is just as important as writing code. 阅读代码与编写代码同重要。 • Learn from the masters. 向⼤大师们学习。 39 Saturday, 17 November 12
129. CONTRIBUTE TO OPEN SOURCE PROJECTS • Reading code is just as important as writing code. 阅读代码与编写代码同重要。 • Learn from the masters. 向⼤大师们学习。 • Take some, give some - sharing is awesome. 不断收获的同时，别忘了付出。 39 Saturday, 17 November 12
130. CONTRIBUTE TO OPEN SOURCE PROJECTS • Reading code is just as important as writing code. 阅读代码与编写代码同重要。 • Learn from the masters. 向⼤大师们学习。 • Take some, give some - sharing is awesome. 不断收获的同时，别忘了付出。 • Make things more useful for yourself therefore for others too. 对⾃自⼰己有⽤用的东⻄西，也许对他⼈人也有⽤用。 39 Saturday, 17 November 12
131. CONTRIBUTE TO OPEN SOURCE PROJECTS 39 Saturday, 17 November 12
132. CONTRIBUTE TO OPEN SOURCE PROJECTS 40 Saturday, 17 November 12
133. CONTRIBUTE TO OPEN SOURCE PROJECTS PHP CodeIgniter PHP Kohana PHP Vanilla Forums PHP Yii Framework JAVASCRIPT AutoSuggest RUBY Ruby on Rails RUBY RailsConfig RUBY Slim RUBY ORM Adapter RUBY Delayed Job RUBY Parallel Tests 40 Saturday, 17 November 12
134. OPEN SOURCE YOUR OWN WORK 41 Saturday, 17 November 12
135. OPEN SOURCE YOUR OWN WORK • Made something useful? Release it! 写了有⽤用的好玩意⼉儿？发布吧，勇敢的少年！ 41 Saturday, 17 November 12
136. OPEN SOURCE YOUR OWN WORK • Made something useful? Release it! 写了有⽤用的好玩意⼉儿？发布吧，勇敢的少年！ • Be critisied of your work, and learn from mistakes. 虚⼼心接受意⻅见与批评，由错误中学习。 41 Saturday, 17 November 12
137. OPEN SOURCE YOUR OWN WORK • Made something useful? Release it! 写了有⽤用的好玩意⼉儿？发布吧，勇敢的少年！ • Be critisied of your work, and learn from mistakes. 虚⼼心接受意⻅见与批评，由错误中学习。 • Be proud of your work, and be recognised. 为⾃自⼰己的⾟辛苦成果感到⾃自豪。 41 Saturday, 17 November 12
138. OPEN SOURCE YOUR OWN WORK • Made something useful? Release it! 写了有⽤用的好玩意⼉儿？发布吧，勇敢的少年！ • Be critisied of your work, and learn from mistakes. 虚⼼心接受意⻅见与批评，由错误中学习。 • Be proud of your work, and be recognised. 为⾃自⼰己的⾟辛苦成果感到⾃自豪。 • Make a little dent in the universe. ⼀一点⼩小⼩小的贡献的话，可以哟〜～ 41 Saturday, 17 November 12
139. OPEN SOURCE YOUR OWN WORK 41 Saturday, 17 November 12
140. OPEN SOURCE YOUR OWN WORK 42 Saturday, 17 November 12
141. OPEN SOURCE YOUR OWN WORK RUBY Action Throttler Throttle actions based on configurable duration and limit. RUBY Angel Nest An open source 'clone' of AngelList. RUBY API Taster Visually test your Rails application's API. RUBY AppReset Resets (and if available, seeds) your databases. RUBY Bustle Activities recording and retrieving using a simple Pub/Sub-like interface. RUBY Datamappify Turn ActiveRecord into DataMapper (sort of)! RUBY Haml2Slim Convert Haml templates to Slim templates. RUBY Inherited Resources Views DRY your view files! RUBY Ruby Decorators Ruby method decorators inspired by Python. RUBY Security Guard A collection of useful tools for auditing data. RUBY Slim Bundle A Textmate / Sublime Text bundle for Slim. PHP Authlite A lightweight, flexible Auth module for Kohana. PHP KThrottler Throttle actions based on configurable duration and limit. PHP PHamlP A bridge between Kohana and PHamlP. JAVASCRIPT Endless Scroll Endless / infinite scrolling solution for jQuery. JAVASCRIPT Inline Confirmation Less obtrusive confirmation dialogues. JAVASCRIPT Skinny Coffee Machine A simple state machine with observers. JAVASCRIPT Slideshow Lite A lightweight slideshow plugin for jQuery. 42 Saturday, 17 November 12
142. ISSUES AND CONVERSATIONS 43 Saturday, 17 November 12
143. 44 Saturday, 17 November 12
144. Credit: travis-ci.com 44 Saturday, 17 November 12
145. ANGEL NEST A real world example of a Rails project 45 Saturday, 17 November 12
146. MADE HEADLINE NEWS 46 Saturday, 17 November 12
147. 47 Saturday, 17 November 12
148. PUBLIC REACTIONS What did people say about this project? 47 Saturday, 17 November 12
149. 48 Saturday, 17 November 12
150. Holy shit the code is clean. Good job dude. I'm impressed by your SCSS too. Good quality dev right here. -- dfischer (via Hacker News) 48 Saturday, 17 November 12
151. 49 Saturday, 17 November 12
152. 50 Saturday, 17 November 12
153. 51 Saturday, 17 November 12
154. 52 Saturday, 17 November 12
155. ... he's turned a negative event (getting stiffed) into positive exposure for his work with hundreds of HN readers. At least at a glance, it seems like solid and clean Rails / Ruby code ... -- tomkarlo (via Hacker News) 52 Saturday, 17 November 12
156. 53 Saturday, 17 November 12
157. I reviewed the angel_nest code and I must say it has the best implementation. Thank you very much for releasing angel_nest as open source. -- Firoz A. (via Email) 53 Saturday, 17 November 12
158. https://github.com/fredwu/angel_nest 54 Saturday, 17 November 12
159. SLIM A Case Study 55 Saturday, 17 November 12
160. 56 Saturday, 17 November 12
161. 57 Saturday, 17 November 12
162. 57 Saturday, 17 November 12
163. 57 Saturday, 17 November 12
164. 58 Saturday, 17 November 12
165. 59 Saturday, 17 November 12
166. 60 Saturday, 17 November 12
167. 61 Saturday, 17 November 12
168. 62 Saturday, 17 November 12
169. 63 Saturday, 17 November 12
170. 64 Saturday, 17 November 12
171. 65 Saturday, 17 November 12
172. 66 Saturday, 17 November 12
173. 67 Saturday, 17 November 12
174. 68 Saturday, 17 November 12
175. 69 Saturday, 17 November 12
176. 70 Saturday, 17 November 12
177. 71 Saturday, 17 November 12
178. 72 Saturday, 17 November 12
179. 73 Saturday, 17 November 12
180. ... you have an impressive collection of open source contributions, and it would be great to keep in touch ... -- Tom Preston-Werner (CEO, GitHub) 73 Saturday, 17 November 12
181. DO FREELANCE WORK 74 Saturday, 17 November 12
182. DO FREELANCE WORK • Like open source work, but with deadlines and pressure. 截⽌止期限与压⼒力。 74 Saturday, 17 November 12
183. DO FREELANCE WORK • Like open source work, but with deadlines and pressure. 截⽌止期限与压⼒力。 • Like open source work, but with some $$$. 赚点外快。 74 Saturday, 17 November 12
184. DO FREELANCE WORK • Like open source work, but with deadlines and pressure. 截⽌止期限与压⼒力。 • Like open source work, but with some $$$. 赚点外快。 • Be involved in projects different to those at your day job. 不同的项⺫⽬目体验与经验。 74 Saturday, 17 November 12
185. DO FREELANCE WORK • Like open source work, but with deadlines and pressure. 截⽌止期限与压⼒力。 • Like open source work, but with some $$$. 赚点外快。 • Be involved in projects different to those at your day job. 不同的项⺫⽬目体验与经验。 • Communication skills with your clients. 客户沟通经验。 74 Saturday, 17 November 12
186. DO FREELANCE WORK • Like open source work, but with deadlines and pressure. 截⽌止期限与压⼒力。 • Like open source work, but with some $$$. 赚点外快。 • Be involved in projects different to those at your day job. 不同的项⺫⽬目体验与经验。 • Communication skills with your clients. 客户沟通经验。 • Communication skills with your remote team members. 远程团队沟通经验。 74 Saturday, 17 November 12
187. DO FREELANCE WORK 74 Saturday, 17 November 12
188. DO FREELANCE WORK 75 Saturday, 17 November 12
189. DO FREELANCE WORK PHP ESTILE (eCommerce) PHP P1.CN (social network) RUBY 2Threads (eCommerce) RUBY AppHelp! (web + mobile app) RUBY 500 Startups (online portal) RUBY TED City 2.0 (content platform) 75 Saturday, 17 November 12
190. AND LASTLY, YOUR DAY JOB 76 Saturday, 17 November 12
191. AND LASTLY, YOUR DAY JOB • You spend most of your hours awake at your day job, make it count! 76 Saturday, 17 November 12
192. AND LASTLY, YOUR DAY JOB • You spend most of your hours awake at your day job, make it count! • Know what you are looking for. 知道⾃自⼰己想要什么。 76 Saturday, 17 November 12
193. AND LASTLY, YOUR DAY JOB • You spend most of your hours awake at your day job, make it count! • Know what you are looking for. 知道⾃自⼰己想要什么。 • What can you get out of working at the company? 在这家公司⼯工作，能学习到什么？ 76 Saturday, 17 November 12
194. AND LASTLY, YOUR DAY JOB • You spend most of your hours awake at your day job, make it count! • Know what you are looking for. 知道⾃自⼰己想要什么。 • What can you get out of working at the company? 在这家公司⼯工作，能学习到什么？ • What did you get out of working at the company? 在这家公司⼯工作，学习到了什么？ 76 Saturday, 17 November 12
195. AND LASTLY, YOUR DAY JOB 76 Saturday, 17 November 12
196. AND LASTLY, YOUR DAY JOB ‣ Small web agency ‣ Mostly static websites ‣ Mostly small clients ‣ Mostly small projects 77 Saturday, 17 November 12
197. AND LASTLY, YOUR DAY JOB • My first real job (part time) ‣ Small web agency ‣ Mostly static websites ‣ Mostly small clients ‣ Mostly small projects 77 Saturday, 17 November 12
198. AND LASTLY, YOUR DAY JOB • My first real job (part time) • HTML, CSS, PHP and JavaScript! ‣ Small web agency ‣ Mostly static websites ‣ Mostly small clients ‣ Mostly small projects 77 Saturday, 17 November 12
199. AND LASTLY, YOUR DAY JOB • My first real job (part time) • HTML, CSS, PHP and JavaScript! • Mostly worked by myself ‣ Small web agency ‣ Mostly static websites ‣ Mostly small clients ‣ Mostly small projects 77 Saturday, 17 November 12
200. AND LASTLY, YOUR DAY JOB • My first real job (part time) • HTML, CSS, PHP and JavaScript! • Mostly worked by myself • Learnt a thing or two about SEO ‣ Small web agency ‣ Mostly static websites ‣ Mostly small clients ‣ Mostly small projects 77 Saturday, 17 November 12
201. AND LASTLY, YOUR DAY JOB • My first real job (part time) • HTML, CSS, PHP and JavaScript! • Mostly worked by myself • Learnt a thing or two about SEO • I’m not as good as I thought I was ‣ Small web agency ‣ Mostly static websites ‣ Mostly small clients ‣ Mostly small projects 77 Saturday, 17 November 12
202. AND LASTLY, YOUR DAY JOB ‣ Small agency (print + web) ‣ Small to mid-sized projects ‣ Household name clients ‣ Meetings with clients 78 Saturday, 17 November 12
203. AND LASTLY, YOUR DAY JOB • My first full time job ‣ Small agency (print + web) ‣ Small to mid-sized projects ‣ Household name clients ‣ Meetings with clients 78 Saturday, 17 November 12
204. AND LASTLY, YOUR DAY JOB • My first full time job • Mostly PHP and JavaScript ‣ Small agency (print + web) ‣ Small to mid-sized projects ‣ Household name clients ‣ Meetings with clients 78 Saturday, 17 November 12
205. AND LASTLY, YOUR DAY JOB • My first full time job • Mostly PHP and JavaScript • Kohana, Zend Framework and Yii ‣ Small agency (print + web) ‣ Small to mid-sized projects ‣ Household name clients ‣ Meetings with clients 78 Saturday, 17 November 12
206. AND LASTLY, YOUR DAY JOB • My first full time job • Mostly PHP and JavaScript • Kohana, Zend Framework and Yii • Team environment ‣ Small agency (print + web) ‣ Small to mid-sized projects ‣ Household name clients ‣ Meetings with clients 78 Saturday, 17 November 12
207. AND LASTLY, YOUR DAY JOB • My first full time job • Mostly PHP and JavaScript • Kohana, Zend Framework and Yii • Team environment • Learnt things I didn’t know (print) ‣ Small agency (print + web) ‣ Small to mid-sized projects ‣ Household name clients ‣ Meetings with clients 78 Saturday, 17 November 12
208. AND LASTLY, YOUR DAY JOB ‣ Well-known startup ‣ Great platforms and websites ‣ Online education! ‣ High traffic ‣ Ruby shop 79 Saturday, 17 November 12
209. • Hired as a PHP developer AND LASTLY, YOUR DAY JOB ‣ Well-known startup ‣ Great platforms and websites ‣ Online education! ‣ High traffic ‣ Ruby shop 79 Saturday, 17 November 12
210. • Hired as a PHP developer • Became a Ruby developer AND LASTLY, YOUR DAY JOB ‣ Well-known startup ‣ Great platforms and websites ‣ Online education! ‣ High traffic ‣ Ruby shop 79 Saturday, 17 November 12
211. • Hired as a PHP developer • Became a Ruby developer • Learnt heaps from senior devs AND LASTLY, YOUR DAY JOB ‣ Well-known startup ‣ Great platforms and websites ‣ Online education! ‣ High traffic ‣ Ruby shop 79 Saturday, 17 November 12
212. • Hired as a PHP developer • Became a Ruby developer • Learnt heaps from senior devs • Manage stakeholder expectations AND LASTLY, YOUR DAY JOB ‣ Well-known startup ‣ Great platforms and websites ‣ Online education! ‣ High traffic ‣ Ruby shop 79 Saturday, 17 November 12
213. • Hired as a PHP developer • Became a Ruby developer • Learnt heaps from senior devs • Manage stakeholder expectations • Online education AND LASTLY, YOUR DAY JOB ‣ Well-known startup ‣ Great platforms and websites ‣ Online education! ‣ High traffic ‣ Ruby shop 79 Saturday, 17 November 12
214. • Hired as a PHP developer • Became a Ruby developer • Learnt heaps from senior devs • Manage stakeholder expectations • Online education • Recognisable brand AND LASTLY, YOUR DAY JOB ‣ Well-known startup ‣ Great platforms and websites ‣ Online education! ‣ High traffic ‣ Ruby shop 79 Saturday, 17 November 12
215. AND LASTLY, YOUR DAY JOB ‣ Well funded startup ($50M+) ‣ Large teams ‣ Multiple projects 80 Saturday, 17 November 12
216. • Hired as a senior developer AND LASTLY, YOUR DAY JOB ‣ Well funded startup ($50M+) ‣ Large teams ‣ Multiple projects 80 Saturday, 17 November 12
217. • Hired as a senior developer • 40+ developers AND LASTLY, YOUR DAY JOB ‣ Well funded startup ($50M+) ‣ Large teams ‣ Multiple projects 80 Saturday, 17 November 12
218. • Hired as a senior developer • 40+ developers • My first agile environment! AND LASTLY, YOUR DAY JOB ‣ Well funded startup ($50M+) ‣ Large teams ‣ Multiple projects 80 Saturday, 17 November 12
219. • Hired as a senior developer • 40+ developers • My first agile environment! • Multiple teams and projects AND LASTLY, YOUR DAY JOB ‣ Well funded startup ($50M+) ‣ Large teams ‣ Multiple projects 80 Saturday, 17 November 12
220. • Hired as a senior developer • 40+ developers • My first agile environment! • Multiple teams and projects • Made lots of friends :-) AND LASTLY, YOUR DAY JOB ‣ Well funded startup ($50M+) ‣ Large teams ‣ Multiple projects 80 Saturday, 17 November 12
221. AND LASTLY, YOUR DAY JOB ‣ Well-known company ‣ Respected in the industry ‣ Online education! ‣ High traffic 81 Saturday, 17 November 12
222. • Hired as a development team lead AND LASTLY, YOUR DAY JOB ‣ Well-known company ‣ Respected in the industry ‣ Online education! ‣ High traffic 81 Saturday, 17 November 12
223. • Hired as a development team lead • Tech leadership and management AND LASTLY, YOUR DAY JOB ‣ Well-known company ‣ Respected in the industry ‣ Online education! ‣ High traffic 81 Saturday, 17 November 12
224. • Hired as a development team lead • Tech leadership and management • Great industry connections AND LASTLY, YOUR DAY JOB ‣ Well-known company ‣ Respected in the industry ‣ Online education! ‣ High traffic 81 Saturday, 17 November 12
225. • Hired as a development team lead • Tech leadership and management • Great industry connections • Online education AND LASTLY, YOUR DAY JOB ‣ Well-known company ‣ Respected in the industry ‣ Online education! ‣ High traffic 81 Saturday, 17 November 12
226. • Hired as a development team lead • Tech leadership and management • Great industry connections • Online education • Recognisable brand AND LASTLY, YOUR DAY JOB ‣ Well-known company ‣ Respected in the industry ‣ Online education! ‣ High traffic 81 Saturday, 17 November 12
227. AND LASTLY, YOUR DAY JOB ‣ Well-funded startup ‣ Unique industry connections ‣ Early stage ‣ Big opportunities 82 Saturday, 17 November 12
228. • Hired as a development team lead AND LASTLY, YOUR DAY JOB ‣ Well-funded startup ‣ Unique industry connections ‣ Early stage ‣ Big opportunities 82 Saturday, 17 November 12
229. • Hired as a development team lead • Design and architect systems AND LASTLY, YOUR DAY JOB ‣ Well-funded startup ‣ Unique industry connections ‣ Early stage ‣ Big opportunities 82 Saturday, 17 November 12
230. • Hired as a development team lead • Design and architect systems • Build champion teams AND LASTLY, YOUR DAY JOB ‣ Well-funded startup ‣ Unique industry connections ‣ Early stage ‣ Big opportunities 82 Saturday, 17 November 12
231. • Hired as a development team lead • Design and architect systems • Build champion teams • Enterprise products + startup spirits AND LASTLY, YOUR DAY JOB ‣ Well-funded startup ‣ Unique industry connections ‣ Early stage ‣ Big opportunities 82 Saturday, 17 November 12
232. • Hired as a development team lead • Design and architect systems • Build champion teams • Enterprise products + startup spirits • Be part of something big (potentially) AND LASTLY, YOUR DAY JOB ‣ Well-funded startup ‣ Unique industry connections ‣ Early stage ‣ Big opportunities 82 Saturday, 17 November 12
233. PERSONAL BRANDING 83 Saturday, 17 November 12
234. PERSONAL BRANDING • Designers have online portfolios, what about us developers? 83 Saturday, 17 November 12
235. PERSONAL BRANDING • Designers have online portfolios, what about us developers? • Blog - show me your thoughts! 83 Saturday, 17 November 12
236. PERSONAL BRANDING • Designers have online portfolios, what about us developers? • Blog - show me your thoughts! • Twitter/Weibo - show me your passion! 83 Saturday, 17 November 12
237. PERSONAL BRANDING • Designers have online portfolios, what about us developers? • Blog - show me your thoughts! • Twitter/Weibo - show me your passion! • GitHub - show me your code! 83 Saturday, 17 November 12
238. PERSONAL BRANDING • Designers have online portfolios, what about us developers? • Blog - show me your thoughts! • Twitter/Weibo - show me your passion! • GitHub - show me your code! • LinkedIn - show me your resume! 83 Saturday, 17 November 12
239. PERSONAL BRANDING 84 Saturday, 17 November 12
240. PERSONAL BRANDING • Build up your network 拓展交际圈 • Establish your reputation 树⽴立好名声 • People will endorse your work 让更多⼈人赞誉你的成果 84 Saturday, 17 November 12
241. 85 Saturday, 17 November 12
242. Most importantly... 85 Saturday, 17 November 12
243. LET PEOPLE REMEMBER YOU! Most importantly... 85 Saturday, 17 November 12
244. 86 Saturday, 17 November 12
245. We can talk the talk 86 Saturday, 17 November 12
246. LET’S WALK THE WALK We can talk the talk 86 Saturday, 17 November 12
247. GIT 87 Saturday, 17 November 12
248. GIT • Merge vs Rebase vs Squash • GitHub 87 Saturday, 17 November 12
249. PRETTIFY YOUR COMMAND PROMPT 88 Saturday, 17 November 12
250. PRETTIFY YOUR COMMAND PROMPT 88 Saturday, 17 November 12
251. PRETTIFY YOUR COMMAND PROMPT 88 Saturday, 17 November 12
252. PRETTIFY YOUR COMMAND PROMPT 88 Saturday, 17 November 12
253. PRETTIFY YOUR COMMAND PROMPT 88 Saturday, 17 November 12
254. PRETTIFY YOUR COMMAND PROMPT 88 Saturday, 17 November 12
255. OH-MY-ZSH HTTPS://GITHUB.COM/ROBBYRUSSELL/OH-MY-ZSH 89 Saturday, 17 November 12
256. 90 Saturday, 17 November 12
257. PLEASE MAKE USE OF ALIASES 91 Saturday, 17 November 12
258. JANUS - VIM FOR THE REST OF US https://github.com/carlhuda/janus 92 Saturday, 17 November 12
259. OUR GIT WORKFLOW 93 Saturday, 17 November 12
260. OUR GIT WORKFLOW • Two deployable branches - “master” and “develop” 93 Saturday, 17 November 12
261. OUR GIT WORKFLOW • Two deployable branches - “master” and “develop” • Both branches connect to CI (Jenkins + Travis) 93 Saturday, 17 November 12
262. OUR GIT WORKFLOW • Two deployable branches - “master” and “develop” • Both branches connect to CI (Jenkins + Travis) • Small tweaks and hot-fixes push to deployable branches directly 93 Saturday, 17 November 12
263. OUR GIT WORKFLOW • Two deployable branches - “master” and “develop” • Both branches connect to CI (Jenkins + Travis) • Small tweaks and hot-fixes push to deployable branches directly • Disposable feature branches 93 Saturday, 17 November 12
264. OUR GIT WORKFLOW • Two deployable branches - “master” and “develop” • Both branches connect to CI (Jenkins + Travis) • Small tweaks and hot-fixes push to deployable branches directly • Disposable feature branches • Pull requests (w/ Travis) 93 Saturday, 17 November 12
265. OUR GIT WORKFLOW • Two deployable branches - “master” and “develop” • Both branches connect to CI (Jenkins + Travis) • Small tweaks and hot-fixes push to deployable branches directly • Disposable feature branches • Pull requests (w/ Travis) • Pull requests get reviewed 93 Saturday, 17 November 12
266. OUR GIT WORKFLOW • Two deployable branches - “master” and “develop” • Both branches connect to CI (Jenkins + Travis) • Small tweaks and hot-fixes push to deployable branches directly • Disposable feature branches • Pull requests (w/ Travis) • Pull requests get reviewed • Pull requests get merged 93 Saturday, 17 November 12
267. OUR GIT WORKFLOW • Two deployable branches - “master” and “develop” • Both branches connect to CI (Jenkins + Travis) • Small tweaks and hot-fixes push to deployable branches directly • Disposable feature branches • Pull requests (w/ Travis) • Pull requests get reviewed • Pull requests get merged • Release and profit! 93 Saturday, 17 November 12
268. CODE REVIEW 94 Saturday, 17 November 12
269. CODE REVIEW • Test coverage - SimpleCov https://github.com/colszowka/simplecov 94 Saturday, 17 November 12
270. CODE REVIEW • Test coverage - SimpleCov https://github.com/colszowka/simplecov • Code quality measurement - Cane https://github.com/square/cane 94 Saturday, 17 November 12
271. CODE REVIEW 95 Saturday, 17 November 12
272. CODE REVIEW • Pairing 95 Saturday, 17 November 12
273. CODE REVIEW • Pairing • GitHub pull requests 95 Saturday, 17 November 12
274. CONTINUOUS INTEGRATION AND DEPLOYMENT 96 Saturday, 17 November 12
275. CONTINUOUS INTEGRATION AND DEPLOYMENT Profile Repo Git Push 96 Saturday, 17 November 12
276. CONTINUOUS INTEGRATION AND DEPLOYMENT Profile Repo Git Push Profile CI 96 Saturday, 17 November 12
277. CONTINUOUS INTEGRATION AND DEPLOYMENT Profile Repo Git Push Platform Repo Git Push Profile CI 96 Saturday, 17 November 12
278. CONTINUOUS INTEGRATION AND DEPLOYMENT Profile Repo Git Push Platform Repo Git Push Profile CI Platform CI 96 Saturday, 17 November 12
279. CONTINUOUS INTEGRATION AND DEPLOYMENT Profile Repo Git Push Platform Repo Git Push Profile CI Platform CI Integration CI 96 Saturday, 17 November 12
280. CONTINUOUS INTEGRATION AND DEPLOYMENT Profile Repo Git Push Platform Repo Git Push Profile CI Platform CI Integration CI Profile Staging Platform Staging 96 Saturday, 17 November 12
281. CONTINUOUS INTEGRATION AND DEPLOYMENT Profile Repo Git Push Platform Repo Git Push Profile CI Platform CI Integration CI Scraper Repo Git Push Profile Staging Platform Staging 96 Saturday, 17 November 12
282. CONTINUOUS INTEGRATION AND DEPLOYMENT Profile Repo Git Push Platform Repo Git Push Profile CI Platform CI Integration CI Scraper Repo Git Push Scraper CI Profile Staging Platform Staging 96 Saturday, 17 November 12
283. CONTINUOUS INTEGRATION AND DEPLOYMENT Profile Repo Git Push Platform Repo Git Push Profile CI Platform CI Integration CI Scraper Repo Git Push Scraper Cron Job Scraper CI Profile Staging Platform Staging 96 Saturday, 17 November 12
284. CONTINUOUS INTEGRATION AND DEPLOYMENT Profile Repo Git Push Platform Repo Git Push Profile CI Platform CI Integration CI Scraper Repo Git Push Scraper Cron Job Scraper Staging Scraper CI Profile Staging Platform Staging 96 Saturday, 17 November 12
285. QUICK START 97 Saturday, 17 November 12
286. QUICK START • Start developing should be simple: 97 Saturday, 17 November 12
287. QUICK START • Start developing should be simple: • git checkout url_to_the_repo 97 Saturday, 17 November 12
288. QUICK START • Start developing should be simple: • git checkout url_to_the_repo • bundle 97 Saturday, 17 November 12
289. QUICK START • Start developing should be simple: • git checkout url_to_the_repo • bundle • rake app:reset 97 Saturday, 17 November 12
290. QUICK START • Start developing should be simple: • git checkout url_to_the_repo • bundle • rake app:reset • rails server 97 Saturday, 17 November 12
291. QUICK START • Start developing should be simple: • git checkout url_to_the_repo • bundle • rake app:reset • rails server • Use Foreman for processes https://github.com/ddollar/foreman 97 Saturday, 17 November 12
292. QUICK START 97 Saturday, 17 November 12
293. QUICK START 98 Saturday, 17 November 12
294. QUICK START 98 Saturday, 17 November 12
295. WHEN IN DOUBT READ THE SOURCE CODE 99 Saturday, 17 November 12
296. WHEN IN DOUBT READ THE SOURCE CODE 100 Saturday, 17 November 12
297. WHEN IN DOUBT READ THE SOURCE CODE 100 Saturday, 17 November 12
298. 101 Saturday, 17 November 12
299. How about a fun little task... 101 Saturday, 17 November 12
300. A SMALL CODE TEST How about a fun little task... 101 Saturday, 17 November 12
301. 102 Saturday, 17 November 12
302. 102 Saturday, 17 November 12
303. 102 Saturday, 17 November 12
304. 102 Saturday, 17 November 12
305. A BAD SOLUTION 103 Saturday, 17 November 12
306. A BAD SOLUTION 104 Saturday, 17 November 12
307. ANOTHER BAD SOLUTION 105 Saturday, 17 November 12
308. ANOTHER BAD SOLUTION 106 Saturday, 17 November 12
309. A GOOD SOLUTION 107 Saturday, 17 November 12
310. A GOOD SOLUTION 108 Saturday, 17 November 12
311. ANOTHER GOOD SOLUTION 109 Saturday, 17 November 12
312. ANOTHER GOOD SOLUTION 110 Saturday, 17 November 12
313. 111 Saturday, 17 November 12
314. And behold, for a solution that... 111 Saturday, 17 November 12
315. BLOWS YOUR MIND ޵䙽੧໨ʂ And behold, for a solution that... 111 Saturday, 17 November 12
316. A 坑爹 SOLUTION 112 Saturday, 17 November 12
317. A 坑爹 SOLUTION 113 Saturday, 17 November 12
318. A 坑爹 SOLUTION 113 Saturday, 17 November 12
319. A 坑爹 SOLUTION 114 Saturday, 17 November 12
320. A 坑爹 SOLUTION 你妹啊！ 114 Saturday, 17 November 12
321. 115 Saturday, 17 November 12
322. WTF?! And, sometimes you’ll get a weird one ... 115 Saturday, 17 November 12
323. “THIS IS A WELL-KNOWN MARS ROVER QUESTION.” 116 Saturday, 17 November 12
324. “THIS IS A WELL-KNOWN MARS ROVER QUESTION.” 你妹啊！ 116 Saturday, 17 November 12
325. 117 Saturday, 17 November 12
326. CHEAT And, once in a while, someone will attempt to ... 117 Saturday, 17 November 12
327. 118 Saturday, 17 November 12
328. Thank you for informed me. I am writing to apologise the sloppy code. There was an unexpected house selling emergency last weekend. I was unable to spent enough time on the test. Your Agency is important to me, I value each opportunity you brought and always prepare it seriously. Please accept my sincere apology for missing this valuable job opportunity. -- Candidate who cheats 118 Saturday, 17 November 12
329. Thank you for informed me. I am writing to apologise the sloppy code. There was an unexpected house selling emergency last weekend. I was unable to spent enough time on the test. Your Agency is important to me, I value each opportunity you brought and always prepare it seriously. Please accept my sincere apology for missing this valuable job opportunity. -- Candidate who cheats 118 Saturday, 17 November 12
330. Thank you for informed me. I am writing to apologise the sloppy code. There was an unexpected house selling emergency last weekend. I was unable to spent enough time on the test. Your Agency is important to me, I value each opportunity you brought and always prepare it seriously. Please accept my sincere apology for missing this valuable job opportunity. -- Candidate who cheats 118 Saturday, 17 November 12
331. Thank you for informed me. I am writing to apologise the sloppy code. There was an unexpected house selling emergency last weekend. I was unable to spent enough time on the test. Your Agency is important to me, I value each opportunity you brought and always prepare it seriously. Please accept my sincere apology for missing this valuable job opportunity. -- Candidate who cheats 118 Saturday, 17 November 12
332. 119 Saturday, 17 November 12
333. Writing features is (usually) not enough... 119 Saturday, 17 November 12
334. WE NEED TESTS! Writing features is (usually) not enough... 119 Saturday, 17 November 12
335. 120 Saturday, 17 November 12
336. “I get paid for code that works, not for tests, so my philosophy is to test as little as possible to reach a given level of confidence.” -- Kent Beck 120 Saturday, 17 November 12
337. TDD != TEST FIRST 121 Saturday, 17 November 12
338. EFFECTIVE TESTS 122 Saturday, 17 November 12
339. EFFECTIVE TESTS 122 Saturday, 17 November 12
340. EFFECTIVE TESTS • They are describing ActiveRecord behaviours. 122 Saturday, 17 November 12
341. EFFECTIVE TESTS • They are describing ActiveRecord behaviours. • Allow mass assignments on foreign keys is wrong. 122 Saturday, 17 November 12
342. EFFECTIVE TESTS • They are describing ActiveRecord behaviours. • Allow mass assignments on foreign keys is wrong. • They are testing how methods are implemented. 122 Saturday, 17 November 12
343. EFFECTIVE TESTS • They are describing ActiveRecord behaviours. • Allow mass assignments on foreign keys is wrong. • They are testing how methods are implemented. • No confidence gained. 122 Saturday, 17 November 12
344. TEST WTFS • What are these “tests” actually testing? 123 Saturday, 17 November 12
345. TEST WTFS • What are these “tests” actually testing? 123 Saturday, 17 November 12
346. TEST WTFS • What are these “tests” actually testing? 123 Saturday, 17 November 12
347. DE-DUPLICATE TEST CASES 124 Saturday, 17 November 12
348. DE-DUPLICATE TEST CASES 125 Saturday, 17 November 12
349. DE-DUPLICATE TEST CASES 125 Saturday, 17 November 12
350. DE-DUPLICATE TEST CASES 125 Saturday, 17 November 12
351. DE-DUPLICATE TEST CASES 125 Saturday, 17 November 12
352. FASTER TESTS 126 Saturday, 17 November 12
353. FASTER TESTS • For objects that don’t matter, use mocks (but don’t abuse ‘em!) ⽆无关紧要的对象们使⽤用 mock 就可以了，但切勿滥⽤用！ 126 Saturday, 17 November 12
354. FASTER TESTS • For objects that don’t matter, use mocks (but don’t abuse ‘em!) ⽆无关紧要的对象们使⽤用 mock 就可以了，但切勿滥⽤用！ • When use factories, favour build to create 使⽤用对象⼯工⼚厂的话，尽量使⽤用 build ⽽而⾮非 create 126 Saturday, 17 November 12
355. FASTER TESTS • For objects that don’t matter, use mocks (but don’t abuse ‘em!) ⽆无关紧要的对象们使⽤用 mock 就可以了，但切勿滥⽤用！ • When use factories, favour build to create 使⽤用对象⼯工⼚厂的话，尽量使⽤用 build ⽽而⾮非 create • In-memory SQLite instead of MySQL/PostgresSQL 可以的话，测试时使⽤用 SQLite 的内存储存 126 Saturday, 17 November 12
356. FASTER TESTS • For objects that don’t matter, use mocks (but don’t abuse ‘em!) ⽆无关紧要的对象们使⽤用 mock 就可以了，但切勿滥⽤用！ • When use factories, favour build to create 使⽤用对象⼯工⼚厂的话，尽量使⽤用 build ⽽而⾮非 create • In-memory SQLite instead of MySQL/PostgresSQL 可以的话，测试时使⽤用 SQLite 的内存储存 • gem install slurp 126 Saturday, 17 November 12
357. REFACTOR WITH CONFIDENCE 127 Saturday, 17 November 12
358. REFACTOR WITH CONFIDENCE 127 Saturday, 17 November 12
359. REFACTOR IN THE WILD Improve code readability and maintainability 128 Saturday, 17 November 12
360. A SIMPLE EXAMPLE 129 Saturday, 17 November 12
361. 130 Saturday, 17 November 12
362. 130 Saturday, 17 November 12
363. 130 Saturday, 17 November 12
364. KEEP CONTROLLERS CLEAN 131 Saturday, 17 November 12
365. 132 Saturday, 17 November 12
366. 132 Saturday, 17 November 12
367. 132 Saturday, 17 November 12
368. 132 Saturday, 17 November 12
369. 132 Saturday, 17 November 12
370. 133 Saturday, 17 November 12
371. A MORE COMPLETE EXAMPLE 134 Saturday, 17 November 12
372. PROBLEM 135 Saturday, 17 November 12
373. PROBLEM • A user has many trips 135 Saturday, 17 November 12
374. PROBLEM • A user has many trips • Each trip may contain more than one stops, e.g. • Beijing -> Shanghai • Shanghai -> Hongkong 135 Saturday, 17 November 12
375. PROBLEM • A user has many trips • Each trip may contain more than one stops, e.g. • Beijing -> Shanghai • Shanghai -> Hongkong • We only want to display the first stop from each trip 135 Saturday, 17 November 12
376. 136 Saturday, 17 November 12
377. 136 Saturday, 17 November 12
378. 136 Saturday, 17 November 12
379. 136 Saturday, 17 November 12
380. 136 Saturday, 17 November 12
381. 136 Saturday, 17 November 12
382. 136 Saturday, 17 November 12
383. 136 Saturday, 17 November 12
384. 136 Saturday, 17 November 12
385. 137 Saturday, 17 November 12
386. 137 Saturday, 17 November 12
387. 138 Saturday, 17 November 12
388. 138 Saturday, 17 November 12
389. A RUBY-CHINA EXAMPLE Albeit an old example, but nonetheless... 139 Saturday, 17 November 12
390. 140 Saturday, 17 November 12
391. 140 Saturday, 17 November 12
392. 140 Saturday, 17 November 12
393. 140 Saturday, 17 November 12
394. 140 Saturday, 17 November 12
395. 141 Saturday, 17 November 12
396. 142 Saturday, 17 November 12
397. REFACTOR + OPEN SOURCE 143 Saturday, 17 November 12
398. IDENTIFY THE ISSUE 144 Saturday, 17 November 12
399. IDENTIFY THE ISSUE 144 Saturday, 17 November 12
400. ATTEMPT TO REFACTOR 145 Saturday, 17 November 12
401. ATTEMPT TO REFACTOR 145 Saturday, 17 November 12
402. ENCOUNTER UNEXPECTED PROBLEM 146 Saturday, 17 November 12
403. ENSURE CODE INTEGRITY 147 Saturday, 17 November 12
404. VERIFY THE ISSUE ELSEWHERE 148 Saturday, 17 November 12
405. BEGIN DEBUGGING... 149 Saturday, 17 November 12
406. TRACK DOWN THE CAUSE 150 Saturday, 17 November 12
407. TRACK DOWN THE CAUSE 150 Saturday, 17 November 12
408. FIX IT! 151 Saturday, 17 November 12
409. FIX IT! 151 Saturday, 17 November 12
410. ENSURE IT ACTUALLY WORKS 152 Saturday, 17 November 12
411. ENSURE IT ACTUALLY WORKS 152 Saturday, 17 November 12
412. ENSURE IT DIDN’T BREAK ANYTHING 153 Saturday, 17 November 12
413. PULL REQUEST 154 Saturday, 17 November 12
414. 155 Saturday, 17 November 12
415. “There are only two hard things in Computer Science: cache invalidation and naming things.” -- Phil Karlton 155 Saturday, 17 November 12
416. Approval User Role ? 156 Saturday, 17 November 12
417. Approval User Role UserApproval 157 Saturday, 17 November 12
418. PROBLEM WITH “UserApproval” 158 Saturday, 17 November 12
419. PROBLEM WITH “UserApproval” • What does it mean? 158 Saturday, 17 November 12
420. PROBLEM WITH “UserApproval” • What does it mean? • A user’s approval? Nope. 158 Saturday, 17 November 12
421. PROBLEM WITH “UserApproval” • What does it mean? • A user’s approval? Nope. • An approval’s user? Nope. 158 Saturday, 17 November 12
422. PROBLEM WITH “UserApproval” • What does it mean? • A user’s approval? Nope. • An approval’s user? Nope. • So, it’s not an approval, or a user. 158 Saturday, 17 November 12
423. PROBLEM WITH “UserApproval” • What does it mean? • A user’s approval? Nope. • An approval’s user? Nope. • So, it’s not an approval, or a user. • Where’s the indication of “role”? 158 Saturday, 17 November 12
424. Approval User Role ? 159 Saturday, 17 November 12
425. Approval User Role Stakeholder 160 Saturday, 17 November 12
426. UserApproval vs Stakeholder 161 Saturday, 17 November 12
427. EMBRACE RUBY We are a fortunate bunch. 162 Saturday, 17 November 12
428. 163 Saturday, 17 November 12
429. This portion of the slide is intentionally left blank. One function?! 164 Saturday, 17 November 12
430. MORE RESOURCES Learn, Learn and Learn 165 Saturday, 17 November 12
431. RAILSCASTS.COM 166 Saturday, 17 November 12
432. PEEPCODE.COM 167 Saturday, 17 November 12
433. DESTROYALLSOFTWARE.COM 168 Saturday, 17 November 12
434. CONFREAKS.COM 169 Saturday, 17 November 12
435. THECHANGELOG.COM 170 Saturday, 17 November 12
436. CODESCHOOL.COM 171 Saturday, 17 November 12
437. RUBYINSIDE.COM 172 Saturday, 17 November 12
438. RUBYFLOW.COM 173 Saturday, 17 November 12
439. RUBYWEEKLY.COM 174 Saturday, 17 November 12
440. NET.TUTSPLUS.COM 175 Saturday, 17 November 12
441. RUBYSOURCE.COM 176 Saturday, 17 November 12
442. NEWS.YCOMBINATOR.COM 177 Saturday, 17 November 12
443. THANK YOU! :-) 178 Saturday, 17 November 12