News

Announcing etcd 3.4

In particular, etcd experienced performance issues with a large number of concurrent read transactions even when there is no write (e.g. “read-only range request … took too long to execute”). Previously, the storage backend commit operation on pending writes blocks incoming read transactions, even when there was no pending write. Now, the commit does not block reads which improve long-running read transaction performance.

Down The Rabbit Hole of Performance Monitoring

Hi, I’m Tony, and I’m an engineer on League. This article is a followup to my performance series, where I talk about optimisation and profiling. This will be a high level overview of how we monitor game performance in League of Legends, how we detect when a performance degradation has slipped through QA and escaped into the wild, and how we track global trends in frame times over many patches and millions of players.

Why Spinnaker matters to CI/CD

It takes many tools to deliver an artifact into production. Tools for building and testing, tools for creating a deployable artifact like a container image, tools for authentication and authorization, tools for maintaining infrastructure, and more. Seamlessly integrating these tools into a workflow can be transformative for an engineering culture, but doing it yourself can be a tall order.

What Bitbucket learned from migrating its unit testing tool

More than four years ago, Stash Bitbucket transitioned from running Javascript unit tests by Java to Karma. Today, I can announce that we switched our test runner to a modern tool called Jest! How did we end up here?

The Linux kernel: Top 5 innovations

The word innovation gets bandied about in the tech industry almost as much as revolution, so it can be difficult to differentiate hyperbole from something that’s actually exciting. The Linux kernel has been called innovative, but then again it’s also been called the biggest hack in modern computing, a monolith in a micro world. Setting aside marketing and modeling, Linux is arguably the most popular kernel of the open source world, and it’s introduced some real game-changers over its nearly 30-year life span.

The lifecycle of Linux kernel testing

In Continuous integration testing for the Linux kernel,I wrote about the Continuous Kernel Integration (CKI) project and its mission to change how kernel developers and maintainers work. This article is a deep dive into some of the more technical aspects of the project and how all the pieces fit together. Every exciting feature, improvement, and bug in the kernel starts with a change proposed by a developer.

Applying Netflix DevOps Patterns to Windows

In the Netflix full cycle DevOps culture the team responsible for building a service is also responsible for deploying, testing, infrastructure, and operation of that service. A key responsibility of Netflix engineers is identifying gaps and pain points in the development and operation of services. Though the majority of our services run on Linux Amazon Machine Images (AMIs), there are still many services critical to the Netflix Playback Experience running on Windows Elastic Compute Cloud (EC2) instances at scale.

Building the New Uber Freight App as Lists of Modular, Reusable Components

Powered by AI: Oculus Insight

To unlock the full potential of virtual reality (VR) and augmented reality (AR) experiences, the technology needs to work anywhere, adapting to the spaces where people live and how they move within those real-world environments. When we developed Oculus Quest, the first all-in-one, completely wire-free VR gaming system, we knew we needed positional tracking that was precise, accurate, and available in real time — within the confines of a standalone headset, meaning it had to be compact and energy efficient. At last year’s Oculus Connect event we shared some details about Oculus Insight, the cutting-edge technology that powers both Quest and Rift S. Now that both of those products are available, we’re providing a deeper look at the AI systems and techniques that power this VR technology.

Understanding Envoy Proxy and Ambassador HTTP Access Logs

Ambassador uses Envoy Proxy as its core L7 routing engine. Envoy Proxy provides a configurable access logging mechanism. Ambassador uses the default format string for Envoy’s access logs.