MediaWiki – [[WM:TECHBLOG]]

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?

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

Long exposure of highway with downtown skyscraper in the background of an unidentified city. There are green grass hills on both sides and a bright moon in the sky.

Perf Matters at Wikipedia in 2016

Looking back at our ups and downs.

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.

What it takes to parse MediaWiki page titles… in Rust

MediaWiki page titles are the primary identifiers for all wiki content – learn how they are validated, normalized and parsed and what it took to do so in Rust.

https://commons.wikimedia.org/wiki/File:Wikimedia_Foundation_Servers_2015-54.jpg

June 2021 Datacenter Switchover

In June 2021, most user traffic was switched from our primary Virginia datacenter to our secondary one in Texas. This post covers how the swtichover went and the issues that came up.