We achieved a 30x performance improvement in Elasticsearch queries by switching from millisecond timestamps to seconds. Here's how. Click to continue

This is the first half of a 2-part series on performance engineering in React. Part 2 - A Deep Dive into React Perf Debugging is now up! This post is for those of you with a complex React application. If you're building something smaller, you might not need to focus

by Olivier Tassinari

We're the engineers behind Khan Academy. We're building a free, world-class education for anyone, anywhere.

Read why setting or omitting NODE_ENV in Express.js applications has drastic effects on your applications performance.

The next version of Firefox OS, the mobile operating system, will unleash the power of devices by taking full advantage of their multi-core processors. Classically, ...

Short answer ? Nope. Long answer ? Inside.

In Windows 10 and Microsoft Edge we’ve made a lot of performance advances in the Chakra JavaScript engine. All with the goal of letting your JavaScript code run faster, taking as much advantage of the underlying hardware as possible, so that the web you create and experience in Microsoft Edge provides consistently delightful user experiences... Read more

Don't measure the weather