What it is and the problem it solves
Git is a distributed version control system invented to replace BitKeeper for Linux kernel development. It solves the problem of applying 250 patches in under three seconds each—something existing tools failed at.
How it works
Git stores every version of every file as a snapshot, not a delta. It uses SHA-1 hashes to identify objects uniquely. Every clone contains the full history and all branches locally. It treats the repository as a content-addressable filesystem.
What works
Local operations complete in sub-three seconds. History is tamper-evident via SHA-1. Full repository clones enable offline work and parallel branch exploration. The content-addressable model guarantees data integrity across transfers.
What does not
Git does not enforce linear history. It does not prevent merge conflicts by design. It does not include built-in code review, permissions, or audit trails for push events. It does not scale to binary assets without extensions.
What it changes
It shifts version control from server-dependent coordination to peer-to-peer replication. It replaces mutable revision numbers with immutable object hashes. It makes branching and merging cheap operations rather than administrative overhead.
Is it worth your time
Yes—if you need offline operation, branch-heavy workflows, or verifiable integrity at scale. No—if your team relies on centralised access control, real-time locking, or GUI-first tooling without adding layers.
