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
300
The Lifecycle of an Outage
Avatar for Scott Sanders jssjr
7
1.5k
Disaster Porn Lightning Talk
Avatar for Scott Sanders jssjr
0
390

Other Decks in Programming

See All in Programming
16年目のピクシブ百科事典を支える最新の技術基盤 / The Modern Tech Stack Powering Pixiv Encyclopedia in its 16th Year
Avatar for ahu ahuglajbclajep
5
990
Fragmented Architectures
Avatar for Denys Poltorak denyspoltorak
0
150
React 19でつくる「気持ちいいUI」- 楽観的UIのすすめ
Avatar for Hiroshi Morishige himorishige
11
5.9k
そのAIレビュー、レビューしてますか？ / Are you reviewing those AI reviews?
Avatar for r-kagaya rkaga
6
4.5k
CSC307 Lecture 01
Avatar for Javier Gonzalez-Sanchez javiergs
PRO
0
690
インターン生でもAuth0で 認証基盤刷新が出来るのか
Avatar for takumi taku271
0
190
[KNOTS 2026登壇資料]AIで拡張‧交差する プロダクト開発のプロセス および携わるメンバーの役割
Avatar for hisatake hisatake
0
250
CSC307 Lecture 06
Avatar for Javier Gonzalez-Sanchez javiergs
PRO
0
680
humanlayerのブログから学ぶ、良いCLAUDE.mdの書き方
Avatar for Yuto tsukamoto1783
0
180
2026年 エンジニアリング自己学習法
Avatar for yumechi(Motoki Hirao) yumechi
0
130
20260127_試行錯誤の結晶を1冊に。著者が解説 先輩データサイエンティストからの指南書 / author's_commentary_ds_instructions_guide
Avatar for nash_efp nash_efp
0
900
Implementation Patterns
Avatar for Denys Poltorak denyspoltorak
0
280

Featured

See All Featured
HU Berlin: Industrial-Strength Natural Language Processing with spaCy and Prodigy
Avatar for Ines Montani inesmontani
PRO
0
200
How Fast Is Fast Enough? [PerfNow 2025]
Avatar for Tammy Everts tammyeverts
3
450
What Being in a Rock Band Can Teach Us About Real World SEO
Avatar for Ade Holder 427marketing
0
170
Game over? The fight for quality and originality in the time of robots
Avatar for Wayne Barker wayneb77
1
110
Building Better People: How to give real-time feedback that sticks.
Avatar for Will Jessup wjessup
370
20k
Bioeconomy Workshop: Dr. Julius Ecuru, Opportunities for a Bioeconomy in West Africa
Avatar for AKADEMIYA2063 akademiya2063
PRO
1
54
The Illustrated Guide to Node.js - THAT Conference 2024
Avatar for David Neal reverentgeek
0
250
Exploring the Power of Turbo Streams & Action Cable | RailsConf2023
Avatar for Kevin Liebholz kevinliebholz
37
6.3k
Data-driven link building: lessons from a $708K investment (BrightonSEO talk)
Avatar for Szymon szymonslowik
1
910
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
Avatar for soudai sone soudai
PRO
196
71k
Navigating the moral maze — ethical principles for Al-driven product design
Avatar for Skipper Chong Warson skipperchong
2
240
SEO Brein meetup: CTRL+C is not how to scale international SEO
Avatar for Linda Hogenes lindahogenes
0
2.3k

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