Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
How Gitlab Works
Search
Saito
November 18, 2012
Technology
34
4.4k
How Gitlab Works
RubyConfChina presentation.
Saito
November 18, 2012
Tweet
Share
More Decks by Saito
See All by Saito
Middle-Scale F2E Application
saito
3
6.7k
Other Decks in Technology
See All in Technology
生成AI時代の開発組織・技術・プロセス 〜 ログラスの挑戦と考察 〜
itohiro73
1
280
Understanding_Thread_Tuning_for_Inference_Servers_of_Deep_Models.pdf
lycorptech_jp
PRO
0
140
Claude Code Actionを使ったコード品質改善の取り組み
potix2
PRO
6
2.4k
Node-RED × MCP 勉強会 vol.1
1ftseabass
PRO
0
160
Node-REDのFunctionノードでMCPサーバーの実装を試してみた / Node-RED × MCP 勉強会 vol.1
you
PRO
0
120
TechLION vol.41~MySQLユーザ会のほうから来ました / techlion41_mysql
sakaik
0
190
AIの最新技術&テーマをつまんで紹介&フリートークするシリーズ #1 量子機械学習の入門
tkhresk
0
140
2025-06-26_Lightning_Talk_for_Lightning_Talks
_hashimo2
2
100
Microsoft Build 2025 技術/製品動向 for Microsoft Startup Tech Community
torumakabe
2
300
生成AI活用の組織格差を解消する 〜ビジネス職のCursor導入が開発効率に与えた好循環〜 / Closing the Organizational Gap in AI Adoption
upamune
5
3.8k
あなたの声を届けよう! 女性エンジニア登壇の意義とアウトプット実践ガイド #wttjp / Call for Your Voice
kondoyuko
4
470
ドメイン特化なCLIPモデルとデータセットの紹介
tattaka
0
150
Featured
See All Featured
Faster Mobile Websites
deanohume
307
31k
Exploring the Power of Turbo Streams & Action Cable | RailsConf2023
kevinliebholz
34
5.9k
Site-Speed That Sticks
csswizardry
10
660
No one is an island. Learnings from fostering a developers community.
thoeni
21
3.3k
Testing 201, or: Great Expectations
jmmastey
42
7.5k
KATA
mclloyd
30
14k
Easily Structure & Communicate Ideas using Wireframe
afnizarnur
194
16k
Rails Girls Zürich Keynote
gr2m
94
14k
Writing Fast Ruby
sferik
628
62k
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
jcasabona
32
2.3k
ピンチをチャンスに:未来をつくるプロダクトロードマップ #pmconf2020
aki_iinuma
124
52k
A Modern Web Designer's Workflow
chriscoyier
694
190k
Transcript
How GitLab Works
Saito github.com/saitowu @saitowu
AIXForce
GitLab?
GitLab? Self Hosted Git Management Application
None
issues code snippet ssh & http wall ... code view
wiki network graph merge request
happy to use it.
happy to use it. want to know how it works?
None
backend
backend repo access
backend repo access presentation layer
Backend
Can be backend:
Can be backend: protocol
Can be backend: file => (RW) git => (R) ssh
=> (RW) http => (RW) protocol
Can be backend: file => (RW) git => (R) ssh
=> (RW) http => (RW) protocol x x
Can be backend: file => (RW) git => (R) ssh
=> (RW) http => (RW) protocol x x #=> remote #=> authentication
SSH:
SSH: normal: authorized_keys
SSH: normal: authorized_keys
SSH:
SSH: gitosis/gitolite: authorized_keys
SSH: gitosis/gitolite: authorized_keys SSH magic command
SSH: gitosis/gitolite: authorized_keys SSH magic command
SSH:
SSH: sshd: not authorized_keys
SSH: sshd: not authorized_keys but patched sshd
SSH: sshd: not authorized_keys but patched sshd
SSH: sshd: not authorized_keys but patched sshd
SSH: sshd: not authorized_keys but patched sshd <= instead of
sshd
SSH:
SSH: GitLab v1.0: gitosis #=> python
SSH: GitLab v1.0: gitosis #=> python GitLab v2.0: gitolite #=>
perl
HTTP:
HTTP: before Git v1.6.6: dumb
HTTP: before Git v1.6.6: dumb after Git v1.6.6: smart!!!
HTTP: https://github.com/schacon/grack/blob/master/lib/git_http.rb#L10-23
git-upload-pack #=> send git-receive-pack #=> receive HTTP:
git-upload-pack #=> send git-receive-pack #=> receive HTTP: smart
HTTP: GitLab v2.7: smart HTTP protocol
Repo Access
Grit: command-line wrapper
Rugged: ruby bindings to libgit2
Grit vs Rugged
Grit vs Rugged win
Grit vs Rugged win lose
Grit vs Rugged win lose github will migrate from grit
to rugged too
Repo Browser
Must Know:
Must Know: Git object model
Must Know: Git encoding strategy Git object model
Must Know: Git encoding strategy Ruby encoding Git object model
Git Object Model:
Git Object Model: 4 basic objects: blob tree commit tag
Git Object Model: 4 basic objects: blob tree commit tag
stored in: .git/objects
Git Object Model:
Git Object Model: git show <sha>
Git Object Model: git cat-file -p <sha> git show <sha>
Git Object Model: http://saito.im/note/Git-Internals/
Git Encoding Strategy: At the core level, git is character
encoding agnostic. http://www.kernel.org/pub/software/scm/git/docs/v1.5.0.2/git-log.html#_discussion
Git Encoding Strategy:
Git Encoding Strategy: filename
Git Encoding Strategy: filename blob contents
Git Encoding Strategy: filename blob contents commit message
Git Encoding Strategy: filename #=> tree blob blob contents commit
message
Git Encoding Strategy: filename #=> tree blob blob contents #=>
blob commit message
Git Encoding Strategy: filename #=> tree blob blob contents #=>
blob commit message #=> commit tag
Git Encoding Strategy:
Git Encoding Strategy: no need #=> blob contents
Git Encoding Strategy: no need #=> blob contents need #=>
commit message, filename
Git Encoding Strategy: no need #=> blob contents need #=>
commit message, filename IMHO: #=> hg hybird strategy & svn
Ruby Encoding: detect encoding:
Ruby Encoding: detect encoding:the longer the better
Ruby Encoding: detect encoding:the longer the better filename
Ruby Encoding: detect encoding:the longer the better filename blob contents
Ruby Encoding: detect encoding:the longer the better filename blob contents
commit message
Ruby Encoding: detect encoding:the longer the better #=> too short
filename blob contents commit message
Ruby Encoding: detect encoding:the longer the better #=> too short
#=> good to detect filename blob contents commit message
Ruby Encoding: detect encoding:the longer the better #=> too short
#=> good to detect #=> not long enough filename blob contents commit message
Ruby Encoding: Character encoding detection:
Ruby Encoding: Character encoding detection: charlock_holmes
Ruby Encoding: Character encoding detection: charlock_holmes rchardet19
Ruby Encoding: Character encoding detection: charlock_holmes #=> libicu rchardet19
Ruby Encoding: Character encoding detection: charlock_holmes #=> libicu rchardet19 #=>
pure ruby
Ruby Encoding:
Ruby Encoding: blob contents:
Ruby Encoding: blob contents: filename and commit message:
Ruby Encoding: blob contents: filename and commit message: detect and
encode
Ruby Encoding: blob contents: filename and commit message: detect and
encode hard to deal with
Ruby Encoding:
Ruby Encoding: CSI
Ruby Encoding: CSI #=> Character Set Independent
Ruby Encoding: CSI USC #=> Character Set Independent
Ruby Encoding: CSI USC #=> Character Set Independent #=> Universal
Character Set
Ruby Encoding: CSI USC #=> Ruby #=> Character Set Independent
#=> Universal Character Set
Ruby Encoding: CSI USC #=> Ruby #=> Java Python Perl
#=> Character Set Independent #=> Universal Character Set
Ruby Encoding:
Ruby Encoding: MRI 1.8:
Ruby Encoding: MRI 1.8: defective encoding
Ruby Encoding: MRI 1.8: MRI 1.9: defective encoding
Ruby Encoding: MRI 1.8: MRI 1.9: defective encoding Encoding Class
Ruby Encoding: MRI 1.8: MRI 1.9: defective encoding pros: regexp
length Encoding Class
Ruby Encoding: MRI 1.8: MRI 1.9: defective encoding pros: regexp
length cons: incompatible character encodings Encoding Class
Hooks
Post-receive:
Post-receive: push event to redis
Post-receive: push event to redis resque it
scalability : Web Hooks Post-receive:
interoperability : API Post-receive:
interoperability : API based on grape Post-receive:
More
Git: pull-request
Git: pull-request git format-patch <br>..<br>
Git: git apply --check <patch> pull-request git format-patch <br>..<br>
Git: git apply --check <patch> pull-request git format-patch <br>..<br> git
am <patch>
Git: git cherry-pick <sha> cherry-pick
One More Thing
Gitlab CI
Thanks