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Every developer has that one Git argument they'll take to the grave. Tabs versus spaces. Commit message conventions. And somewhere near the top of the list: rebase versus merge.
It's one of those debates that can get weirdly heated. People have strong opinions, and they'll defend their preferred approach with an almost religious intensity. But here's the thing: both commands solve the same fundamental problem—integrating changes from one branch into another—and they do it in completely different ways.
The right choice depends on what you care about. Do you want a perfectly linear history, even if it means rewriting commits? Or do you want a truthful record of exactly what happened, even if it's a little messy? That's the tension. Let me walk through both approaches, the tradeoffs, and the workflow that's worked well for the teams I've been on.
Merging takes two branches and combines them, creating a new "merge commit" that ties their histories together. It's non-destructive. Every commit you made on your feature branch stays exactly as it was. Git just adds a new commit that has two parents—one from your branch, one from the branch you're merging into.
git checkout main
git merge feature
The result is a commit history that looks like a branching tree. You can see exactly when the feature branch split off, what work happened in parallel, and when it came back together. The history is complete and accurate.
The downside is that it can get noisy. If you're merging branches frequently—say, a team of five developers all merging into main multiple times a day—the commit history fills up with merge commits. Half the graph is just "Merge branch 'feature' into main." It's honest, but it's not always readable.
There's also the issue of bisecting. If you're trying to find the commit that introduced a bug, merge commits complicate the search. You have to decide which parent to follow. It's not impossible, but it adds friction.
Rebasing takes your commits and replays them on top of another branch, one by one. Instead of creating a merge commit, it rewrites your commits so they appear as if you wrote them after the latest changes on the target branch.
git checkout feature
git rebase main
The result is a perfectly linear history. No merge commits. No branching spaghetti. Your feature commits sit cleanly at the tip of main, as if you'd written them sequentially. It's aesthetically pleasing and makes tools like git log --oneline much easier to read.
But there's a catch. Rebasing rewrites history. The commit hashes change because the parent commits are different. If you've already pushed your branch and someone else is working on top of it, rebasing creates a nightmare of force pushes and lost work. The golden rule of rebasing is: never rebase a shared branch.
This is where a lot of the anxiety around rebase comes from. People hear "rewriting history" and picture catastrophic data loss. In practice, rebasing your own feature branch before merging it into main is perfectly safe and often desirable. It's rebasing branches that other people are using that causes problems.
Both merge and rebase can produce conflicts. How you deal with them is different, and that difference influences which approach people prefer.
When you merge and hit a conflict, you resolve all the conflicts at once and create the merge commit. It's a single event. You see the combined state of both branches, fix the issues, and move on. For complex merges with dozens of conflicting files, this can be overwhelming.
When you rebase and hit a conflict, you resolve it one commit at a time. Git replays each of your commits, pausing when one doesn't apply cleanly. You fix the conflict, stage the resolution, and continue the rebase. Then it moves to your next commit. This means you're resolving smaller, more targeted conflicts, which can be easier to reason about.
# During an interactive rebase
git rebase main
# CONFLICT in some-file.js
# Fix the conflict
git add some-file.js
git rebase --continue
The downside is that you might have to resolve the same conflict multiple times if your later commits touch the same code. It can feel repetitive. But you also have the option to squash commits together before rebasing, which reduces the number of times you have to resolve conflicts.
If you've ever wrestled with a particularly nasty conflict, you know it can feel a bit like debugging a tricky error. The same patience you'd bring to TypeScript error handling in try catch blocks applies here—methodically checking each conflict, understanding what each side is doing, and making sure the resolution doesn't introduce new bugs.
Most teams I've worked with settle on a hybrid approach that's become pretty standard in the industry. It goes like this:
You create a feature branch off main. You commit your work as you go, making small, messy commits—"WIP," "fix typo," "try different approach." These aren't the commits you want immortalized in the project history. They're checkpoints for you.
When you're ready to open a pull request, you do an interactive rebase against main. This lets you clean up your commits—squash the WIP commits, reword messages, reorder changes—so your branch tells a coherent story.
git rebase -i main
# Mark commits as 'squash' or 'reword' as needed
After the rebase, your feature branch is a clean set of well-described commits sitting on top of the latest main. You push (with --force-with-lease if you'd pushed earlier) and open the PR.
When the PR is approved, you have a choice. You can merge it with a merge commit, preserving the fact that the work was done on a branch. Or you can rebase and fast-forward, adding your clean commits directly to the tip of main. The latter produces a linear history. The former preserves context. Both are defensible.
This hybrid workflow—messy local commits, cleaned up with interactive rebase, then merged—gives you the best of both worlds. The project history is readable. The development process wasn't bogged down by commit perfectionism. And nobody had to force-push a shared branch.
A few years ago, I was on a team where one developer was a rebase evangelist. He rebased everything. Feature branches, shared branches, the main branch itself on one terrifying occasion. His reasoning was that a clean history was worth any cost.
The crisis came during a big feature launch. Three developers were collaborating on a long-running feature branch. They'd all pushed commits. They were coordinating changes. Then the rebase evangelist decided the branch's history was too messy and rebased the entire thing against main—and force-pushed.
The other two developers pulled the next morning to find their commit hashes had changed, their local work was diverged, and half their changes appeared to be gone. It took most of a day to reconcile everything. Several commits were accidentally dropped. The launch was delayed.
The lesson wasn't that rebase is bad. It was that rebasing shared branches is bad. The evangelist had the right instinct—a clean history is valuable—but he applied the technique at the wrong scope. He should have rebased his own commits before merging, not the entire shared branch.
After that incident, the team adopted a written Git policy. Feature branches could be rebased by their owner before merging. Shared branches were never rebased, period. The problem wasn't the tool. It was the lack of agreement on when to use it.
Merge commits get a bad rap, but they serve a purpose. They group related work together. If you look at a merge commit, you can see all the commits that were part of a feature. You can revert the entire feature by reverting the merge commit, which is cleaner than reverting a dozen individual commits.
For large features where multiple developers collaborated, a merge commit documents that collaboration. The history shows the branch, the conversations in the pull request, the review process. That context is valuable when you're trying to understand why a change was made six months later.
git revert -m 1 <merge-commit-hash>
Reverting a merge commit takes one command. Reverting a rebased set of commits takes multiple commands and careful ordering. For projects that prioritize maintainability and the ability to undo changes cleanly, merge commits are a feature, not a bug.
Linear history makes certain operations much simpler. git bisect works more predictably because there are no merge commits to navigate. git log --oneline produces a single, clean list of changes. Understanding the order in which changes were introduced is straightforward.
For projects with frequent releases, a linear history makes release notes easier to generate. You can see every commit that's going into the release in order, without untangling branches. CI/CD pipelines that trigger on every commit to main benefit from the clarity of a linear sequence.
If you've been optimizing your development workflow—like implementing Redis caching patterns or speeding up modern websites—a clean Git history is another tool in the same toolbox. It reduces the cognitive load of understanding what changed and when.
The real power of rebase isn't the linear history it produces. It's the interactive mode. git rebase -i opens an editor where you can reorder, combine, edit, and drop commits. This is where you turn a messy development history into a coherent narrative.
git rebase -i HEAD~5
In the editor, you'll see something like:
pick a1b2c3d Add user authentication
pick b2c3d4e Fix typo in auth module
pick c3d4e5f WIP: start payment integration
pick d4e5f6g Complete payment integration
pick e5f6g7h Remove debug logging
You can change pick to squash to merge the typo fix into the authentication commit. You can reorder the payment commits to group them together. You can reword a commit message that's unclear. The result is a set of commits that tells a story someone else can follow.
This is a skill worth developing. Reading a well-crafted commit history is like reading a good comparison article—each section builds on the last, and the reasoning is clear.
Force pushing has a bad reputation, and for good reason. git push --force overwrites the remote branch with your local version, potentially destroying commits that other people have based work on. It's the Git equivalent of yelling "fire" in a crowded theater.
But there's a time when force pushing is perfectly fine: when you're the only person working on a branch. If you've cleaned up your feature branch with an interactive rebase, you need to force push to update the remote. This is expected. This is normal.
git push --force-with-lease
The --force-with-lease flag is a safer version that checks whether the remote branch has changed since you last fetched. If someone else pushed commits, it refuses to overwrite them. It's a safety net for the times when you thought you were the only one on the branch but weren't.
If you're working alone, the choice is yours. Rebasing gives you a clean, linear history. Merging gives you a complete, unaltered record. Neither is wrong. Pick the one that matches your aesthetic preference.
If you're on a team, you need a shared policy. Most teams I've worked with end up with something like this:
main and clean up commits.main with a merge commit to preserve context and enable easy reverts.main or any shared branch.This gives you the readability of rebased feature branches and the safety of merge commits on main. It's a compromise, but it works.
Some teams go further and enforce squash merging. Every PR becomes a single commit on main. The history is linear, and each commit represents a complete feature. You lose the granular commit history, but for projects where features are the unit of change, that's often fine.
The rebase vs merge debate isn't about right and wrong. It's about tradeoffs. Merging preserves history but creates noise. Rebasing creates clarity but rewrites history. The right choice depends on your project, your team, and what you value in a commit log.
If you're new to Git, start with merging. It's simpler and safer. As you get comfortable, learn interactive rebasing for cleaning up your own branches. Eventually, you'll develop an intuition for when each tool is appropriate.
The worst outcome isn't picking the wrong strategy. It's picking no strategy at all—letting the Git history grow chaotically, with no shared understanding of how the team integrates work. A clear, documented policy, whatever it is, beats ambiguity every time.
Looking to streamline your development workflow, from Git strategy to CI/CD pipelines? Red Surge Technology helps teams adopt practical processes that actually stick. Get in touch to discuss how we can help.