Unifying our mobile and desktop domains
How we achieved 20% faster mobile response times, improved SEO, and reduced infrastructure load.
Tag: site reliability engineering
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.
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.
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.
Profiling PHP in production at scale
We built an efficient sampling profiler for PHP. It runs continually in production on live requests, and generates trace logs and flame graphs.
Wikimedia’s CDN: the road to ATS
The 2nd of a 3 part series that describes some of the changes to Wikimedia’s Content Delivery Network, including the replacement of Varnish with Apache Traffic Server (ATS) as the on-disk HTTP cache component of the CDN.
Wikimedia’s CDN up to 2018: Varnish and IPSec
The 1st of a 3 part series that will describe some of the changes, which included replacing Varnish with Apache Traffic Server (ATS) as the on-disk HTTP cache component of the CDN.
How we made editing Wikipedia twice as fast
Over the past six months we deployed a new technology that sped up Wikipedia’s backend application, reducing the median page-saving time for editors from about 7.5 seconds to 2.5 seconds.