This document discusses using Git as a NoSQL database to store and retrieve data. It shows how to initialize a Git repository, add JSON documents as files, commit the changes, and then retrieve the data by filename or hash. The document demonstrates basic CRUD operations for storing key-value pairs using Git, and notes that Git can provide features commonly found in NoSQL databases like speed, transactions, concurrency, backup, and replication capabilities.

1. @somkiat.cc
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2. Git ๤ําหรับเก็บ code
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3. Git ๤ําหรับเก็บ data ?
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NoSQL

5. No SQL
Not only SQL
Non-relational database
Schema-less

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Git ?

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Git as a data store ?

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Create database
$git init hello && cd hello
Initialized empty Git repository in ./hello/.git/

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Create data
$echo '{"id": 1, "name": "Somkiat", "age": 30}' > 1.json
$git add 1.json
$git commit -m "Create new person"
[master (root-commit) c1809c0] Create new person
1 file changed, 1 insertion(+)
create mode 100644 1.json

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Read data
$git show master:1.json
{"id": 1, "name": "Somkiat", "age": 30}

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Create with hash object
$echo '{"id": 1, "name": "Somkiat", "age": 30}' |
git hash-object -w --stdin
f8d407f8880d3126c45cc38dee9f025ddcd816ad

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Read data
$git cat-file -p f8d407
{"id": 1, "name": "Somkiat", "age": 30}

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Key-value database !!

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Git data model

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.git/objects
reference
master
commit
c1809
tree
bb819
blob
d092a
tree
ab123
blob
67ab9

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Let’s programming

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Git store
$git store set key value
$git store get key
$git store keys
$git store save
$git store clear

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Git workflow

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Speed
On my machine 100 commits/second

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Transaction

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Concurrency

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Backup

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Replication

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Git as NoSQL
Key-value

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Resources
https://github.com/up1/demo-git-as-nosql