Engineering

Over the course of a year, GitHub’s engineers make millions of commits across all of our internal repositories, process billions of API requests, and run tens of thousands of deployments across the internal apps that power GitHub’s services. We use many of GitHub’s products and plenty of other open source tools to operate at this scale. Here’s an inside look into how we do it.

Architecture & optimization

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.

Architecture & optimization

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.

Engineering

Scaling merge-ort across GitHub

GitHub switched to performing merges and rebases using merge-ort. Come behind the scenes to see why and how we made this change.

Three white, pixelated thumbs up icons are floating on a black background trailed by waves of purple, pink, and yellow and sparkle icons

Engineering

Exploring developer happiness, inclusion, and productivity at GitHub’s Design Conference

As a design organization, we have the opportunity to make a significant impact on designing the platform for all developers. How does the emergence of creative AI impact our work? How can we achieve an inclusive experience for a spectrum of all abilities? What does designing for developer happiness look like?

Engineering

Accessibility considerations behind code search and code view

A look at how we improved the readability of code on GitHub.

Architecture & optimization

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.

Engineering

Design’s journey towards accessibility

Design can have a significant impact on delivering accessible experiences to our users. It takes a cultural shift, dedicated experts, and permission to make progress over perfection in order to build momentum. We’ve got a long way to go, but we’re starting to see a real shift in our journey to make GitHub a true home for all developers.

An example of new colors on GitHub with Primer. There are demonstrations of color contrast improvements in a few sections: default text with accessible hyperlinks, secondary text with additional content and an underline hyperlink, and a hyperlink with icon. There is also a subtle green change in the “comment” button with the text that says “solving hundreds of accessibility issues.”

Engineering

Unlocking inclusive design: how Primer’s color system is making GitHub.com more inclusive

How Primer’s updated light and dark theme color contrast strategy resolved hundreds of color-contrast-related accessibility issues over one thousand use cases.

Engineering

How we work: inclusive retrospectives for the GitHub Accessibility leadership team

Learn about tools and processes the GitHub Accessibility leadership team uses for retrospectives that fully engage every team member.

Architecture & optimization

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.…

Engineering

How the Grafana Alerting team scales their issue management with GitHub Projects

Hear from Grafana Labs’ Armand Grillet about how his team uses GitHub Projects.

Architecture & optimization

How GitHub Docs’ new search works

GitHub Docs recently changed its site-search to Elasticsearch. Here’s how it was implemented.

Architecture & optimization

The technology behind GitHub’s new code search

A look at what went into building the world’s largest public code search index.

Filtered view of a project showing only tasks that have been assigned to the user viewing the list.

Engineering

How the GitHub Docs team uses GitHub Projects

Explore how the GitHub Docs team uses GitHub Projects for content coordination, reviews, and publishing.

Engineering

Enabling branch deployments through IssueOps with GitHub Actions

What if developers want to leverage branch deployments but don’t have a full ChatOps stack integrated with their repositories? We wanted to set out to find a way for all developers to be able to take advantage of branch deployments with ease, right from their GitHub repository, and so the branch-deploy Action was born!