GitLab reduced merge conflicts by 90% with changelog placeholders

GitLab's development cycle is highly dynamic, with over 700 contributors adding features to monthly releases, often resulting in merge conflicts due to simultaneous changes in the changelog. Traditionally, these conflicts arose because multiple authors appended updates at the same line, breaking the sequence when any merge request was processed. A proposed solution by a community member, ayufan, involved using a union merge strategy in the .gitattributes file to alleviate conflicts. However, GitLab implemented a different approach by adding 100 placeholder lines at the top of the changelog, enabling contributors to insert updates at random locations and significantly reducing conflicts, although not entirely eliminating them. This method allows for smoother merging processes, even from mobile devices, and encourages other projects to adopt similar strategies for efficient version control, while also highlighting the importance of maintaining a changelog over relying solely on git diffs.

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