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Wikimedia SSO: Evaluation

In the first of three posts about the implementation of Single Sign On (SSO). This post looks at the original landscape of Wikimedia’s web-based services, summarizes requirements for a new SSO provider, looks at existing FLOSS solutions, and explains why Apereo CAS was chosen.

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.

In search of the perfect search for Wikipedia

In a recent project, the Android app team decided to improve one of their core experiences: searching for articles on Wikipedia. Our goal was to make the discovery process for readers more intelligent, personalized and efficient to present the right result at the right time.