Git Introduction
Git is the world's most popular distributed version control system. It was designed to handle everything from small to very large projects with speed and efficiency.
🚀 Key Features of Git
Unlike older systems that track "deltas" (changes to files), Git tracks Snapshots. Every time you commit, Git takes a picture of what all your files look like at that moment.
- Distributed: Every developer has a full copy of the project history.
- Speed: Most operations are local, making them near-instant.
- Data Integrity: Everything in Git is checksummed using SHA-1, ensuring your history cannot be altered without detection.
- Branching: Created to handle heavy branching and merging as a primary workflow.
Why Git?
Git has become the foundation of DevOps because it enables a "Code as Truth" philosophy. It powers:
- CI/CD Pipelines: Automated builds triggered by Git commits.
- Infrastructure as Code (IaC): Managing your servers using Git-tracked scripts.
- Collaboration: Allowing hundreds of developers to work on the same project via GitHub, GitLab, or Bitbucket.
Data Flow (Peer-to-Peer)
In Git, there isn't just one central pool of code. Information flows between peer repositories.
[!NOTE] Open Source Heritage Git was created by Linus Torvalds in 2005 for the development of the Linux kernel. It is completely open-source and free to use.