Many of the experiences and interactions people have on Facebook today are made possible with AI. When you log in to Facebook, we use the power of machine learning to provide you with unique, personalized experiences. Machine learning models are part of ranking and personalizing News Feed stories, filtering out offensive content, highlighting trending topics, ranking search results, and much more.

Next week, we are going to relicense our open source projects React, Jest, Flow, and Immutable.js under the MIT license. We’re relicensing these projects because React is the foundation of a broad ecosystem of open source software for the web, and we don’t want to hold back forward progress for nontechnical reasons. This decision comes after several weeks of disappointment and uncertainty for our

Over time, the software industry has come up with several ways to deliver code faster, safer, and with better quality. Many of these efforts center on ideas such as continuous integration, continuous delivery, agile development, DevOps, and test-driven development. All these methodologies have one common goal: to enable developers to get their code out quickly and correctly to the people who use i

Operating large-scale, globally distributed services requires accurate monitoring of the health and performance of our systems to identify and diagnose problems as they arise. Facebook uses a time series database (TSDB) to track and store system measurements such as product stats (e.g., how many messages are being sent per minute), service stats (e.g., the rate of queries hitting the cache tier vs

In the JavaScript community, engineers share hundreds of thousands of pieces of code so we can avoid rewriting basic components, libraries, or frameworks of our own. Each piece of code may in turn depend on other pieces of code, and these dependencies are managed by package managers. The most popular JavaScript package manager is the npm client, which provides access to more than 300,000 packages

Introducing OpenCellular: An open source wireless access platform Today we're announcing that Facebook has designed and tested an open source and cost-effective, software-defined wireless access platform aimed to improve connectivity in remote areas of the world. The platform is designed to improve connectivity since it can be deployed to support a range of communication options, from a network in

With thousands of commits a week across hundreds of thousands of files, Facebook’s main source repository is enormous–many times larger than even the Linux kernel, which checked in at 17 million lines of code and 44,000 files in 2013. Given our size and complexity—and Facebook’s practice of shipping code twice a day–improving our source control is one way we help our engineers move fast. Choosing

FAIR has achieved noted advancements in the development of AI training hardware considered to be among the best in the world. We have done this through a combination of hardware expertise, partner relationships with vendors, and a significant strategic investment in AI research. FAIR is more than tripling its investment in GPU hardware as we focus even more on research and enable other teams acros

The Linux kernel is constantly changing, growing roughly 1.4 million lines of code in the last year alone. The kernel community is constantly adding new features, supporting new hardware, refining interfaces, and fixing bugs. In order to take advantage of these changes, production Linux deployments need to take on the difficult task of validating new kernels across all their workloads. Scaling ove

Today, we’re open-sourcing Facebook Infer, a static program analyzer that Facebook uses to identify bugs before mobile code is shipped. Static analyzers are automated tools that spot bugs in source code by scanning programs without running them. They complement traditional dynamic testing: Where testing allows individual runs through a piece of software to be checked for correctness, static analys

A couple of months ago we launched Paper, a fluid and beautiful way to explore and share stories. Today we’re open-sourcing Pop, the animation engine behind the application’s smooth animations and transitions. Using dynamic instead of traditional static animations, Pop drives the scrolling, bouncing, and unfolding effects that bring Paper to life. Need for Pop Since the original iPhone, iOS has ex