Deploying branches to GitHub.com
At GitHub, we use a variant of the Flow pattern to deploy changes: new code is always deployed from a pull request branch, and merged only once it has been…
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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.
Workload Analysis with MySQL’s Performance Schema
Earlier this spring, we upgraded our database cluster to MySQL 5.6. Along with many other improvements, 5.6 added some exciting new features to the performance schema.MySQL’s performance schema is a…
Eight lessons learned hacking on GitHub Pages for six months
Believe it or not, just over a year ago, GitHub Pages, the documentation hosting service that powers nearly three-quarters of a million sites, was little more than a 100-line shell…
How GitHub uses GitHub to document GitHub
Providing well-written documentation helps people understand, make use of, and contribute back to your project, but it’s only half of the documentation equation. The underlying system used to serve documentation…
Yummy cookies across domains
Last Friday we announced and performed a migration of all GitHub Pages to their own github.io domain. This was a long-planned migration, with the specific goal of mitigating phishing attacks…
TCMalloc and MySQL
Over the last month or so, we noticed steady week-over-week rises in overall MySQL query time. A poorly-performing database makes for a slow site and a slow site makes for…
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