Git & GitHub Interview Question #133

What is a merge queue on GitHub?

Security, Team Workflows, Troubleshooting & Senior Git/GitHub Scenarios Senior Advanced

Quick Interview Answer

A merge queue helps repositories integrate pull requests into a busy protected branch while validating them against the latest expected target state. Instead of every approved pull request racing to merge independently, queued changes can be tested in an ordered integration process.

Detailed Explanation

This is useful when many pull requests are merged frequently and required checks could become stale as the target branch changes. Availability and exact behavior depend on repository configuration.

Code Example

# Developers still prepare branches normally:
git fetch origin
git switch feature/my-change
git rebase origin/main

# Queue behavior is managed by GitHub
# after the pull request satisfies repository rules.