How GitHub uses eBPF to improve deployment safety

GitHubApr 3, 2026

The uphill climb of making diff lines performant

Here is a 2-3 sentence summary of the article: To improve the performance of the Files changed tab in GitHub, the engineering team implemented multiple targeted approaches to address different pull request sizes and complexities, focusing on focused optimizations for diff-line components, virtualization, and foundational rendering improvements. The team simplified the React component structure for diff lines, reducing the number of DOM elements, JavaScript, and React components, and removed unnecessary elements to improve performance. By making incremental changes, such as reducing event handlers and moving complex state to conditionally rendered child components, the team achieved significant improvements in responsiveness and memory pressure, especially for large pull requests.

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How GitHub uses eBPF to improve deployment safety

From latency to instant: Modernizing GitHub Issues navigation performance

The uphill climb of making diff lines performant