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

Failure Teaches Success

Avatar for Hiromu Shioya Hiromu Shioya
July 17, 2014
Technology
0
4.4k

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
Tweet

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
840
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
190
はじめての転職講座/The Guide of First Career Change
Avatar for Hiromu Shioya kwappa
6
5.5k
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
2k
三大あいまい能力/Three ambiguous abilities
Avatar for Hiromu Shioya kwappa
1
370
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
6.6k
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
370
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
310
HIGH OUTPUT Infrastructure Engineering
Avatar for Hiromu Shioya kwappa
1
75

Other Decks in Technology

See All in Technology
Agile Leadership Summit Keynote 2026
Avatar for seki at druby.org m_seki
1
610
SREじゃなかった僕らがenablingを通じて「SRE実践者」になるまでのリアル / SRE Kaigi 2026
Avatar for AEON aeonpeople
6
2.3k
usermode linux without MMU - fosdem2026 kernel devroom
Avatar for Hajime Tazaki thehajime
0
230
ZOZOにおけるAI活用の現在 ~開発組織全体での取り組みと試行錯誤~
Avatar for ZOZO Developers zozotech
PRO
5
5.5k
Azure Durable Functions で作った NL2SQL Agent の精度向上に取り組んだ話/jat08
Avatar for TonyTonyKun thara0402
0
180
30万人の同時アクセスに耐えたい！新サービスの盤石なリリースを支える負荷試験 / SRE Kaigi 2026
Avatar for GENDA genda
4
1.3k
SREのプラクティスを用いた3領域同時 マネジメントへの挑戦 〜SRE・情シス・セキュリティを統合した チーム運営術〜
Avatar for coconala_engineer coconala_engineer
2
650
学生・新卒・ジュニアから目指すSRE
Avatar for Hiroya Onoe hiroyaonoe
2
610
レガシー共有バッチ基盤への挑戦 - SREドリブンなリアーキテクチャリングの取り組み
Avatar for Konishi tatsuhiro tatsukoni
0
220
GitHub Issue Templates + Coding Agentで簡単みんなでIaC/Easy IaC for Everyone with GitHub Issue Templates + Coding Agent
Avatar for AEON aeonpeople
1
220
20260204_Midosuji_Tech
Avatar for Takuya Yonezawa takuyay0ne
1
150
AIエージェントを開発しよう！-AgentCore活用の勘所-
Avatar for YukiOgawa yukiogawa
0
170

Featured

See All Featured
Side Projects
Avatar for Sacha Greif sachag
455
43k
HU Berlin: Industrial-Strength Natural Language Processing with spaCy and Prodigy
Avatar for Ines Montani inesmontani
PRO
0
220
ReactJS: Keep Simple. Everything can be a component!
Avatar for Pedro Nauck pedronauck
666
130k
Between Models and Reality
Avatar for mayunak mayunak
1
190
Understanding Cognitive Biases in Performance Measurement
Avatar for Philip Tellis bluesmoon
32
2.8k
Distributed Sagas: A Protocol for Coordinating Microservices
Avatar for Caitie McCaffrey caitiem20
333
22k
How To Speak Unicorn (iThemes Webinar)
Avatar for Michelle Schulp Hunt marktimemedia
1
380
Winning Ecommerce Organic Search in an AI Era - #searchnstuff2025
Avatar for Aleyda Solis aleyda
1
1.9k
Max Prin - Stacking Signals: How International SEO Comes Together (And Falls Apart)
Avatar for Tech SEO Connect techseoconnect
PRO
0
85
Building a Modern Day 
E-commerce SEO Strategy
Avatar for Aleyda Solis aleyda
45
8.6k
Optimizing for Happiness
Avatar for Tom Preston-Werner mojombo
379
71k
It's Worth the Effort
Avatar for 3n 3n
188
29k

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