Garden City Rubyconf 2015 Keynote: Race Condition

A talk on habits, programming and motorcycles (closing Keynote, Garden City Ruby Conf 2015)

Transcript

1. RACE CONDITION habits, programming & motorcycles
2. @niranjan_p Niranjan Paranjape Founding Partner & CTO C42 Engineering achamian
3. @ponnappa Sidu Ponnappa Founding Partner & CEO C42 Engineering kaiwren
7. Yamaha R15
8. KTM RC390
9. Triumph Daytona 675R
11. Don’t Panic
12. There Are Two Kinds Of Programmers those who live in fear and those who don’t
13. Fear Makes You Slow
14. Fear Makes You Avoid Change
15. Fear Causes Panic
16. Panic Causes Mistakes
17. You Don’t Learn When Panicked
18. Your Mind is the Bottleneck not your bike
19. Push Yourself to Go Faster …but without causing a panic attack every five minutes
20. Do Not Trust Your Instincts
21. Your Human Instincts Are Wrong (especially in a new context)
22. Copy-Paste Oriented Development
23. Crunch Mode: Stop Writing Tests
24. Fat Controller Skinny Model
25. Hot Fix on Production
26. Default Instincts Need Re-training
28. Panic Braking (destabilises the bike)
29. Chopping Throttle (when getting on the gas is the right thing to do)
30. Your Strongest Instincts Will Work Against You (they may even cause you to crash)
31. Understand and Compensate for Survival Reactions (panic is the enemy)
32. You Improve What You Measure
33. We All Track Metrics code coverage, cyclomatic complexity, velocity…
34. Measurements Introduce Biases loc as a productivity metric #fail
35. Areas of Interest Create Biases beautifully architected codebase, no working code #fail
36. Measure Everything You Can lap times, sector times, rpm, gearing…
37. Train One Metric at a Time it’s hard to improve in two areas simultaneously at 100+ kmph
38. Local Maxima != Global Maxima sometimes improving one corner reduces overall lap times
39. Focus Is A Currency
40. You Never Fix Two Bugs at the Same Time juggling is for jugglers
41. You Always Prefer Fine Grained Abstractions decoupling help you think more clearly
42. You Hate Side Effects because side effects cause bugs
43. You Are Always Quicker When the Architecture is Well Understood fewer decisions, more time to think about each of them
44. You Are Always Quicker With A Comprehensive Spec Suite you don’t have to evaluate side effects in your head, so fewer decisions
45. Focus is a Currency and everyone has a finite budget
46. You Spend Focus When You Make Decisions so you want to save up for important decisions
47. You Spend Focus When You Make Decisions and everyone has a finite budget
48. Habits Save On Trivial Decision Making all you need to do is practice
50. Go Slow To Go Fast
51. Overall Consistency Trumps Spot Performance frequent death marches slow you down
52. We Know Learning Takes Time
53. But Not Learning Takes Longer
54. We Know Katas are Valuable
55. We Treat these as Investments we trade spot performance in the short-term for consistent performance in the long-term
56. CONSISTENCY
57. CONSISTENCY
58. Be an Investor invest the time it takes to get better
59. Investments Take Time to Mature don’t be impatient, you will go slower
60. Invest in Practice practice common decisions through drills to save focus
61. Drills throttle control, braking, counter steering, lines…
62. Define Your Product
63. We Understand the Importance of Clear Requirements
64. We Use Tools like User Stories
65. We Value Clear Acceptance Criteria
66. Knowing Desired Outcomes Reduces Errors
67. Define the Product for every corner
68. Clarify the Tradeoffs easy to unintentionally trade entry speed for exit speed
69. Tune your Markers markers are essential to optimising your cornering
70. Know Your Environment
71. Picking the Right Tools Matters ruby for number crunching cobol for web applications
72. We Constantly Optimize Our Development Environments OS, shell, editor, IDE, macros…
73. We Constantly Tune Our Configurations dotfiles
74. We Know Our Projects Inside-Out architecture, domain, ops
75. Choose Your Kit
76. Motorcycles are More Specialized than we Think
77. Track Bikes are Heavily Optimized posture, handling, comfort, storage, range, mileage, power delivery, braking
78. Non-Track Bikes are a Bad Idea ok for MVP, but not to scale
79. Customize Your Bike Further To Suit adjust brakes, lever play, suspension, gearing etc. to your needs
80. Know Your Track surface, camber, corners, lines
81. Hack Your Habits
82. Instincts can be hacked turn a disadvantage into a strength
83. You Go Where You Look measure loc, you get loc measure customer focus, you get customer focus
84. Target Fixation
85. You Literally Go Where You Look use this to go faster, not just avoid crashes
86. When You’re Going Down, You’re Going Down
87. High Side
88. PHOTO CREDITS Raniel Diaz, https://flic.kr/p/cGsPDY ! Pair Programming, http://commons.wikimedia.org/ wiki/File:Pair_programming_1.jpg ! Lorenzo crashes out of the lead of the Valencia MotoGP. Source, Alberto Siz / AP
89. Q & A @niranjan_p Niranjan Paranjape Founding Partner & CTO C42 Engineering achamian @ponnappa Sidu Ponnappa Founding Partner & CEO C42 Engineering kaiwren