Flame graphs arrive in WikimediaDebug
The new “Excimer UI” option in WikimediaDebug generates flame graphs. What are flame graphs, and when do you need this?
Recent Posts
Around the world: How Wikipedia became a multi-datacenter deployment
Learn why we transitioned the MediaWiki platform to serve traffic from multiple data centers, and the challenges we faced along the way.
From hell to HTML: releasing a Python package to easily work with Wikimedia HTML dumps
Announcing mwparserfromhtml, a new library that makes it easy to parse the HTML content of Wikipedia articles
Perf Matters at Wikipedia in 2016
Looking back at our ups and downs.
How we’re building our Kubernetes pipeline in GitLab
Our deployment pipeline helps our developers build, test, and release Docker images to our production Kubernetes. Now we’re migrating the pipeline to GitLab and seizing the chance to refine our tools.
Web Perf Hero: Valentín Gutierrez
Today we celebrate two numbers: 25% lower latency for ATS backend requests at the p75, and up to 1000X reduction of ATS disk read latency at the p999.
HTTP/2 performance revisited
Deploying HTTP/2 support to the Wikimedia CDN significantly changed how browsers negotiate and transfer data during the page load process. We found regressions in performance during the transition and are sharing the lessons we learned.
Introducing Terraform support on Wikimedia Cloud VPS
Learn how Wikimedia Cloud VPS was adapted to work with Terraform.
Join the Wikimania Hackathon, August 12-14 2022!
The Wikimania 2022 Hackathon is a free, online event where anyone interested in Wikimedia technology can work together on projects, learn new skills, and meet other technical contributors. Don’t miss this opportunity to come together with other Wikimedia technical community members!
Building DReaMeRS: How and why we opened a datacenter in France
Content delivery networks (CDNs) are one of the modern building blocks of the Internet. This blog post highlights a recent addition to Wikimedia’s CDN setup.