GitHub Issues search now supports nested queries and boolean operators: Here’s how we (re)built it
Plus, considerations in updating one of GitHub’s oldest and most heavily used features.
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Architecture & optimization
The GitHub Ruby on Rails monolith is big: nearly two million lines of code and more than 1,000 engineers collaborating on it, to the tune of around 20 deployments every day. Follow along to see how we build and continually improve the tools you use every day.
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Introducing sub-issues: Enhancing issue management on GitHub
Explore the iterative development journey of GitHub’s sub-issues feature. Learn how we leveraged sub-issues to build and refine sub-issues, breaking down larger tasks into smaller, manageable ones.
Breaking down CPU speed: How utilization impacts performance
The Performance Engineering team at GitHub assessed how CPU performance degrades as utilization increases and how this relates to capacity.
How we improved push processing on GitHub
Pushing code to GitHub is one of the most fundamental interactions that developers have with GitHub every day. Read how we have significantly improved the ability of our monolith to correctly and fully process pushes from our users.
Latest
How we organize and get things done with SERVICEOWNERS
Take CODEOWNERS and GitHub teams to the next level. Learn about how GitHub engineering solves the age old problem of who owns what.
Measuring Git performance with OpenTelemetry
Use our new open source Trace2 receiver component and OpenTelemetry to capture and visualize telemetry from your Git commands.
Optimize your GitHub Codespaces costs with upgraded virtual machines
See how much more you can get out of GitHub Codespaces by taking advantage of the improved processing power and increased headroom in the next generation of virtual machines.
How we build containerized services at GitHub using GitHub
Learn about how we build containerized services that power microservices on the GitHub.com platform and many internal tools.
Crafting a better, faster code view
The new GitHub Code View brings users many new features to improve the code reading and exploration experiences, and we overcame a number of unique technical hurdles in order to deliver those features without compromising performance.
Building GitHub with Ruby and Rails
Since the beginning, GitHub.com has been a Ruby on Rails monolith. Today, the application is nearly two million lines of code and more than 1,000 engineers collaborate on it daily.…
How GitHub Docs’ new search works
GitHub Docs recently changed its site-search to Elasticsearch. Here’s how it was implemented.
The technology behind GitHub’s new code search
A look at what went into building the world’s largest public code search index.
How we tripled max concurrent jobs to boost performance of GitHub Actions
The GitHub Actions team has done lots of work to improve the performance and resource consumption of Actions on GHES in the past year.
Scaling Git’s garbage collection
A tour of recent work to re-engineer Git’s garbage collection process to scale to our largest and most active repositories.
How we’re using projects to build projects
At GitHub we use GitHub to build our own products, and the new projects experience is no different. Check out how our team uses projects to build powerful project planning for developers.
Improving Git push times through faster server side hooks
The history of pre-receive hooks, how we discovered that the performance was problematic, and how we went about safely replacing them.
Performance at GitHub: deferring stats with rack.after_reply
How we sped up GitHub.com by moving slow, non-critical code into rack.after_reply.
A brief history of code search at GitHub
This blog post tells the story of why we built a new search engine optimized for code.
Improving GitHub code search
Today, we are rolling out a technology preview for GitHub code search, the next iteration for search, discovery, and navigation on GitHub.
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