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Git Rebase vs Merge

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Both git merge and git rebase combine work from one branch into another. git merge ties the two histories together with a merge commit, preserving exactly what happened. git rebase replays your commits one by one on top of the other branch, producing a clean, linear history - but rewriting your commits in the process.

The golden rule: never rebase commits others have already pulled. Try both in the terminal playground - a real shell in your browser.

Side by side

Behaviorgit mergegit rebase
History shapeBranching, with a merge commitLinear
Rewrites commitsNoYes
Safe on shared branchesYesNo
Preserves exact historyYesNo
Easy to trace when things mergedYesHarder

Syntax

CommandWhat it does
git merge featureMerge feature into the current branch
git merge --no-ff featureAlways create a merge commit
git rebase mainReplay current branch's commits on main
git rebase -i HEAD~3Interactively edit the last 3 commits
git rebase --abortCancel a rebase in progress

Git rebase vs merge FAQ

What is the difference between git rebase and git merge?
git merge combines two branches by creating a new merge commit that joins their histories, keeping the exact record of what happened. git rebase instead moves your commits so they replay on top of another branch, producing a straight-line history but rewriting those commits with new hashes. Merge preserves history; rebase rewrites it for cleanliness.
When should I use merge and when should I use rebase?
Use merge to integrate a finished branch (especially a shared one) - it's safe and non-destructive. Use rebase to tidy up your own local commits before sharing them, or to update a feature branch onto the latest main for a clean history. Many teams rebase locally, then merge into main.
What is the golden rule of rebasing?
Never rebase commits that others have already based work on - typically anything you've pushed to a shared branch. Because rebase rewrites commits, doing so forces everyone else to reconcile a diverged history. Rebase freely on local, unpushed commits; use merge (or revert) for anything already public.
Does rebase or merge cause fewer conflicts?
Neither avoids conflicts, but they surface them differently. A merge resolves all conflicts once, in the merge commit. A rebase can ask you to resolve conflicts commit by commit as each one is replayed. The total work is similar; rebase just spreads it out.
Can I practice this online?
Yes. Open the terminal playground to run git merge and git rebase in a real shell in your browser - nothing to install. Coddy's free interactive Git course also covers merging and rebasing step by step.
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