Definition
A merge queue serializes and validates pull requests before they land on a protected base branch, reducing race conditions and broken main-line builds when many PRs compete.
Key Points
- github merge queue support for stacked-pull-requests is rolling out progressively after the Jul 30, 2026 public preview
- John Resig (jQuery) cited landing five stacked PRs into a merge queue at once during early testing
- Complements branch protections and required status checks