Understanding Git’s architecture, the DAG model, and the three-tree system is the key to mastering version control.
Module Contents
1. Understanding Git Architecture
Learn how Git is a Directed Acyclic Graph (DAG) of commits and why this matters for version control. Dive into the object model: Blobs, Trees, Commits, and Tags.
2. The Three Trees
Understand the three main areas: Working Directory, Staging Area (Index), and Repository (.git). Visualize how data moves between them.
3. The Commit DAG
Deep dive into how commits form an immutable history through parent pointers. Learn why history is tamper-proof and how branches are just pointers.
Module Review
Test your knowledge with interactive flashcards and a quick reference cheat sheet.
Module Chapters
Understanding Git Architecture
[!TIP] Git is NOT just a Version Control System. It is a content-addressable filesystem with a VCS user interface written on top of it.
Start LearningThe Three Trees
[!NOTE] Git is not just “Saving”. It is a three-stage process of Editing, Staging, and Committing.
Start LearningThe Commit DAG
[!IMPORTANT] The DAG (Directed Acyclic Graph) is the single most important data structure in Git. It is the mathematical foundation of everything.
Start LearningModule Review: Git Fundamentals
Key Takeaways
Start Learning