Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Failure Teaches Success

Sponsored · SiteGround - Reliable hosting with speed, security, and support you can count on. →
Avatar for Hiromu Shioya Hiromu Shioya
July 17, 2014
Technology
4.4k
0

Failure Teaches Success

2014-07-17 System Lightning Talks Bar Vol.2
"Failure Teaches Success" by kwappa

Avatar for Hiromu Shioya

Hiromu Shioya

July 17, 2014

More Decks by Hiromu Shioya

See All by Hiromu Shioya
成長自己責任時代のあるきかた/How to navigate the era of personal responsibility for growth
Avatar for Hiromu Shioya kwappa
4
970
礼節とHRTと心理的安全性(2025年9月版)/Civility, HRT and Psychological Safety(Sep. 2025 edition)
Avatar for Hiromu Shioya kwappa
0
240
はじめての転職講座/The Guide of First Career Change
Avatar for Hiromu Shioya kwappa
6
5.6k
My Generation 年配者がこの先生きのこるには (Developers CAREER Boost 2024 Edition)/My Generation How elder engineers can survive
Avatar for Hiromu Shioya kwappa
5
2.1k
三大あいまい能力/Three ambiguous abilities
Avatar for Hiromu Shioya kwappa
1
400
My Generation 年配者がこの先生きのこるには/My Generation How elder engineers can survive
Avatar for Hiromu Shioya kwappa
3
6.7k
勝ちに不思議の勝ちあり、負けに不思議の負けあり/There is a mystery to win, but there is no mystery to lose
Avatar for Hiromu Shioya kwappa
0
400
伸び代だらけのチームに
伸びてもらうための施策100連発/100 measures to grow up a team with a lot of growth potential
Avatar for Hiromu Shioya kwappa
1
330
HIGH OUTPUT Infrastructure Engineering
Avatar for Hiromu Shioya kwappa
1
89

Other Decks in Technology

See All in Technology
そのSLO 99.9%、本当に必要ですか？ 〜優先度付きSLOによる責任共有の設計思想〜 / Is that 99.9% SLO really necessary? Design philosophy of shared responsibility through prioritized SLOs
Avatar for VTRyo vtryo
0
700
カオナビに Suspenseを導入するまで / The Road to Suspense at kaonavi
Avatar for 株式会社カオナビ kaonavi
1
450
AI飲み会幹事エージェントを作っただけなのに
Avatar for Yuta Kimi ykimi
0
200
QAエンジニアはどうやって プロダクト議論の場に入れるのか？
Avatar for Sammy(MoritaMasami) moritamasami
2
420
20260513_生成AIを専属DSに_AI分析結果の検品テクニック_ハンズオン_交通事故データ
Avatar for NobuakiOshiro doradora09
PRO
0
220
AI 時代の Platform Engineering
Avatar for Recruit recruitengineers
PRO
1
180
サイボウズ、プラットフォームエンジニアリング始めるってよ ― プラットフォームチームの事業貢献と組織アラインメントの強化
Avatar for Shin'ya Ueoka ueokande
0
110
Oracle Cloud Infrastructure presents managed, serverless MCP Servers for Oracle AI Database
Avatar for thatjeffsmith thatjeffsmith
0
280
2026年春のAgentCoreアプデ 細かいやつ全部まとめ
Avatar for みのるん minorun365
4
230
CyberAgent YJC Connect
Avatar for shimayuu shimaf4979
1
180
Claude Code / Codex / Kiro に AWS 権限を 渡すとき、何を設計すべきか
Avatar for Kazuki Adachi k_adachi_01
5
1.3k
なぜ、私がCommunity Builderに?〜活動期間1か月半でも選出されたワケ〜
Avatar for Yuuki Yamashita yama3133
0
130

Featured

See All Featured
技術選定の審美眼（2025年版） / Understanding the Spiral of Technologies 2025 edition
Avatar for Takuto Wada twada
PRO
118
110k
Pawsitive SEO: Lessons from My Dog (and Many Mistakes) on Thriving as a Consultant in the Age of AI
Avatar for David Carrasco davidcarrasco
0
130
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
Avatar for Dan Newman danielanewman
231
23k
How to Align SEO within the Product Triangle To Get 
Buy-In & Support - #RIMC
Avatar for Aleyda Solis aleyda
2
1.5k
Optimizing for Happiness
Avatar for Tom Preston-Werner mojombo
378
71k
Believing is Seeing
Avatar for Spiro Bolos oripsolob
1
120
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
Avatar for Eileen M. Uchitelle eileencodes
28
3.5k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
Avatar for Sam Stephenson sstephenson
162
16k
Navigating Algorithm Shifts & AI Overviews - #SMXNext
Avatar for Aleyda Solis aleyda
1
1.2k
Winning Ecommerce Organic Search in an AI Era - #searchnstuff2025
Avatar for Aleyda Solis aleyda
1
2k
BBQ
Avatar for Matthew Crist matthewcrist
89
10k
XXLCSS - How to scale CSS and keep your sanity
Avatar for Zaharenia Atzitzikaki sugarenia
250
1.3M

Transcript

  1. Failure Teaches Success 2014-07-17! System Lightning Talks Bar Vol.2! SHIOYA,

    Hiromu (@kwappa)

  2. Hello, World!

  3. kwappa SHIOYA Hiromu

  4. None

  5. http://cookpad.com

  6. http://info.cookpad.com

  7. http://bit.ly/cookpadjobs

  8. Failure Teaches Success

  9. CASE 1 1998

  10. FLAG SHOULD NEVER COMPARE TO 1

  11. FOR EXAMPLE

  12. !!! BUG !!! item[42] # => 0

  13. !!! BUG !!! item[42] # => 1

  14. !!! BUG !!! item[42] # => 2

  15. !!! BUG !!! item[42] # => 3

  16. !!! BUG !!! item[42] # => 4

  17. !!! BUG !!! item[42] # => 5

  18. DEAD END

  19. BETTER ONE

  20. CASE 2 2008

  21. BOSS SHOULD NEVER DEPLOY

  22. NEW BOSS CAME AND TOLD US

  23. NEW BOSS CAME AND TOLD US I USED TO CODE,

    BUT I TOOK AN ARROW IN THE KNEE...

  24. OUR SYSTEM commit checkout rsync DEVELOPER SVN STAGING DEPLOY PRODUCTION

  25. HERE COMES THE BOSS rsync STAGING DEPLOY PRODUCTION

  26. HERE COMES THE BOSS login rsync STAGING DEPLOY PRODUCTION

  27. HERE COMES THE BOSS login rsync STAGING DEPLOY PRODUCTION $vi

    regist.php

  28. HERE COMES THE BOSS login rsync STAGING DEPLOY PRODUCTION $vi

    regist.php $rm regist.php

  29. HERE COMES THE BOSS login rsync STAGING DEPLOY PRODUCTION $vi

    regist.php $rm regist.php $svn hogehoge

  30. HERE COMES THE BOSS login rsync STAGING DEPLOY PRODUCTION $vi

    regist.php $rm regist.php $svn hogehoge $./deploy.sh

  31. CASE 3 2014

  32. ERRORS SHOULD NEVER PASS SILENTLY

  33. http://www.flickr.com/photos/chrisdonia/3460805358/

  34. http://www.flickr.com/photos/chrisdonia/3460805358/ ʊਓਓਓਓਓਓਓਓਓਓਓਓਓਓʊ ʼ 500 ʻ ʼ INTERNAL SERVER ERROR ʻ

    ʉY^Y^Y^Y^Y^Y^Y^Y^Y^Y^Y^Y^Yʉ

  35. OAuth2::Response#parsed # => nil

  36. https://github.com/intridea/oauth2/commit/ 56f9758d961fc317a05b2f93fd039588967a84b1

  37. None
  38. None
  39. None
  40. None

  41. WHY DID IT WORK? multi_xml oauth2 requires

  42. WHY DID IT WORK? multi_xml httparty oauth2 requires depends

  43. WHY DID IT WORK? aws-sdk-ruby multi_xml httparty oauth2 requires depends

    depends

  44. WHY DID IT BRAKE?

  45. WHY DID IT BRAKE? Gemfile

  46. WHY DID IT BRAKE? Gemfile.lock Gemfile

  47. https://github.com/aws/aws-sdk-ruby/commit/ c25952ed50d568172de6eb1756525a35eeb2fa77

  48. WHY DID IT BREAK? aws-sdk-ruby multi_xml httparty oauth2 requires depends

    depends

  49. WHY DID IT BREAK? aws-sdk-ruby multi_xml httparty oauth2 requires depends

  50. WHY DID IT BREAK? aws-sdk-ruby multi_xml oauth2 requires

  51. WHY DID IT BREAK? aws-sdk-ruby oauth2 requires

  52. WHY DID IT BREAK? aws-sdk-ruby oauth2 requires ʊਓਓਓਓਓਓਓਓਓਓਓਓਓਓʊ ʼ 500

    ʻ ʼ INTERNAL SERVER ERROR ʻ ʉY^Y^Y^Y^Y^Y^Y^Y^Y^Y^Y^Y^Yʉ

  53. CONCLUSION

  54. FLAG SHOULD NEVER COMPARE TO 1

  55. FLAG SHOULD NEVER COMPARE TO 1 BOSS SHOULD NEVER DEPLOY

  56. FLAG SHOULD NEVER COMPARE TO 1 BOSS SHOULD NEVER DEPLOY

    ERRORS SHOULD NEVER PASS SILENTLY

  57. Failure Teaches Success SHARE YOUR FAILURES!!! THANK YOU FOR LISTENING