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

Raw Git

Avatar for Scott Sanders Scott Sanders
May 05, 2014
Programming
2
260

Raw Git

A quick presentation covering some of the basics of working with Git objects in Ruby.

Avatar for Scott Sanders

Scott Sanders

May 05, 2014
Tweet

More Decks by Scott Sanders

See All by Scott Sanders
Brubeck - A high-performance statsd-compatible aggregation daemon
Avatar for Scott Sanders jssjr
1
290
The Lifecycle of an Outage
Avatar for Scott Sanders jssjr
7
1.5k
Disaster Porn Lightning Talk
Avatar for Scott Sanders jssjr
0
380

Other Decks in Programming

See All in Programming
チーム開発の “地ならし"
Avatar for konifar konifar
8
5.1k
カンファレンス遠征を（安く）楽しむ技術
Avatar for 藤掛大介 wp_daisuke
0
170
The Missing Link in Angular's Signal Story: Resource API and httpResource
Avatar for Manfred Steyer manfredsteyer
PRO
0
130
自動テストのアーキテクチャとその理由ー大規模ゲーム開発の場合ー
Avatar for SEGADevTech segadevtech
2
1k
オフライン対応！Flutterアプリに全文検索エンジンを実装する @FlutterKaigi2025
Avatar for JaiChangPark itsmedreamwalker
2
210
Nitro v3
Avatar for kazupon kazupon
2
310
Vueで学ぶデータ構造入門 リンクリストとキューでリアクティビティを捉える / Vue Data Structures: Linked Lists and Queues for Reactivity
Avatar for konkarin konkarin
1
310
All(?) About Point Sets
Avatar for hole hole
0
160
モデル駆動設計をやってみよう Modeling Forum2025ワークショップ/Let’s Try Model-Driven Design
Avatar for haru860 haru860
0
160
目的で駆動する、AI時代のアーキテクチャ設計 / purpose-driven-architecture
Avatar for MinoDriven minodriven
7
1.9k
GraalVM Native Image トラブルシューティング機能の最新状況（2025年版）
Avatar for NTTドコモソリューションズ　Java担当 ntt_dsol_java
0
150
Designing Repeatable Edits: The Architecture of . in Vim
Avatar for Satoru Kitaguchi satorunooshie
0
390

Featured

See All Featured
Optimizing for Happiness
Avatar for Tom Preston-Werner mojombo
379
70k
Intergalactic Javascript Robots from Outer Space
Avatar for Vicent Martí tanoku
273
27k
Designing for Performance
Avatar for Lara Hogan lara
610
69k
Done Done
Avatar for chrislema chrislema
186
16k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
Avatar for Michelle Schulp Hunt marktimemedia
31
2.6k
Agile that works and the tools we love
Avatar for Rasmus Luckow-Nielsen rasmusluckow
331
21k
Thoughts on Productivity
Avatar for Jon Yablonski jonyablonski
73
4.9k
The Psychology of Web Performance [Beyond Tellerrand 2023]
Avatar for Tammy Everts tammyeverts
49
3.2k
VelocityConf: Rendering Performance Case Studies
Avatar for Addy Osmani addyosmani
333
24k
Making the Leap to Tech Lead
Avatar for Ryan Cromwell cromwellryan
135
9.6k
Facilitating Awesome Meetings
Avatar for Lara Hogan lara
57
6.6k
Imperfection Machines: The Place of Print at Facebook
Avatar for Scott Boms scottboms
269
13k

Transcript

  1. Raw Git Underneath the porcelain and plumbing

  2. None

  3. What is git? • Distributed Version Control System • A

    content addressable filesystem • OMG It’s full of SHA1 hashes! • With some reference logs to these hashes That’s pretty much it...

  4. git in 15 seconds

  5. None
  6. None
  7. None
  8. None
  9. None
  10. None

  11. wtf just happened?

  12. None

  13. so many files. ermahgerd.

  14. None

  15. its just a graph, really

  16. with three main objects

  17. “files” blobs

  18. “directories” trees

  19. “references to trees” commits

  20. and a reference log

  21. None

  22. … because its easy let’s do this by hand

  23. None
  24. None
  25. None

  26. “blob” SP <length> NUL

  27. None
  28. None
  29. None
  30. None
  31. None
  32. None
  33. None
  34. None
  35. None

  36. does git work now? we made a blob!

  37. None
  38. None
  39. None

  40. NOPE!

  41. we need our tree

  42. “tree” SP <length> NUL <mode> <name> NUL <sha>

  43. None
  44. None
  45. None
  46. None
  47. None
  48. None
  49. None
  50. None
  51. None

  52. does git work yet? now we have a tree!

  53. None
  54. None
  55. None

  56. NOPE!

  57. still need the commit

  58. “commit” SP <length> NUL “tree <sha>” LF “author <name> <timestamp>”

    LF “committer <name> <timestamp>” LF LF “<message>” LF
  59. None
  60. None
  61. None
  62. None
  63. None
  64. None
  65. None
  66. None

  67. lol typo

  68. None

  69. does git work now?!? ok, we have our objects

  70. None
  71. None
  72. None

  73. NOPE!

  74. what gives?

  75. AKA Let’s glue it all together that pesky reflog

  76. None
  77. None
  78. None

  79. That’s it!

  80. None
  81. None
  82. None
  83. None
  84. None

  85. git is really simple

  86. and extremely flexible

  87. go build your own workflow!

  88. and don’t be scared to look under the hood

  89. Thanks!

  90. github.com/jssjr @scott_sanders