Day 12 - 100 Days of DevOps Interview -What is the difference between Git Fast-Forward vs. Ort Merge
In Git, a merge is a process of combining changes from different branches into a single branch. It is used to integrate the changes made in one branch into another branch.
✅ In Git, there are two main types of merges: fast-forward merges and ort merges.
🚀 A fast-forward merge is the simplest type of merge. It occurs when the commit history of the two branches to be merged is identical up to a certain point. In this case, Git can simply move the pointer of the receiving branch to the tip of the sending branch, without creating any new commits. This results in a linear commit history, with no merge commits.
🔄The ort merge strategy is a relatively new merge strategy in Git that is designed to be faster and more correct than the traditional recursive merge strategy. It is based on the idea of ordered resolution trees, which are a more efficient way of representing the possible outcomes of a merge.
🔑 The key differences between fast-forward merges and ort merges :
⚔️Linear commit history: Fast-forward merges always produce a linear commit history, while ort merges can produce a non-linear commit history if there are merge conflicts .
🕵️♂️.History tracking: Fast-forward merges do not track the history of a merge, while ort merges do. This means that you can see which commits were involved in a merge when you look at the commit history.
⚡️Performance: Fast-forward merges are generally faster than ort merges. This is because ort merges need to do more work to resolve merge conflicts .
✔️Correctness: Ort merges are generally more correct than fast-forward merges. This is because ort merges can handle merge conflicts more gracefully.
🏁Ultimately, the best choice of merge strategy will depend on the specific needs of your project . If you are looking for the simplest and fastest merge strategy, then a fast-forward merge may be a better choice. However, if you need to track the history of a merge or if you are merging branches that have conflicting changes, then an ort merge may be a better choice.
🔔NOTE: merge-ort is a default merge strategy starting from GIT 2.33
https://github.blog/changelog/2022-09...
https://github.blog/2021-08-16-highli...
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