PlanOut is Facebook's language for online field experiments supporting "A/B tests," factorial designs, and more. According to Facebook, PlanOut makes possible to separate experimental design from application code and allows experimenters to concisely describe their designs. Facebook claims to be using PlanOut to run over a thousand experiments each day that involve hundreds of millions of people.
Facebook, Google, LinkedIn, and Twitter have decided to make sure that a relational databases is “web-scale”, so they have put their efforts behind WebScaleSQL, a branch of MySQL 5.6 Community Edition.
AlchemyAPI recently announced a taxonomy and a sentiment analysis API based on deep learning that can help transform digital content into ad inventory. IBM, Yahoo, Microsoft, Facebook, Google and others are working in the deep learning space. We take the high level view of what deep learning is all about and what are the key advances throughout the past months in the field.
PHP has long filled an important role at Facebook, and over the years the company has constantly sought to improve the language's performance. First there was the Hip Hop Virtual Machine, and now there is the Hack, programming language.
Cassandra is rapidly heading towards 2.1 release, with 2.1.0-beta1 already available for evaluation. We take a look at major features introduced in the latest major release and what's coming up. Supported by DataStax, Cassandra is expanding its reach towards the enterprise world. DataStax recently announced a partner network program, Patrick McFadin called out on MongoDB's scaling issues and other
Facebook has open sourced Conceal, a set of Java APIs for file encryption and authentication on Android. Conceal uses a subset of OpenSSL’s algorithms and predefined options in order to keep the library smaller, currently being 85KB.
Om is a new a ClojureScript interface for Facebook’s React HTML UI library. Om uses Clojure(Script)'s persistent data structures and requestAnimationFrame to further improve React's rendering. InfoQ talked to Om's creator, David Nolen, about Om and the benefits of functional concepts for application programming.
Twitter has open sourced their MapReduce streaming framework, called Summingbird. Available under the Apache 2 license, Summingbird is a large-scale data processing system enabling developers to uniformly execute code in either batch-mode (Hadoop/MapReduce-based) or stream-mode (Storm-based) or a combination thereof, called hybrid mode.
Facebook has posted on how they've sped up Mercurial to be five times faster than Git in certain operations. Read on to find out what they have changed, and why it makes such a difference for their setup.
Chaitanya Mishra, from Facebook, spoke at Velocity Conf London last month about the approach to scale Facebook’s Android app from a web view interface to a full-fledged native app. To achieve this transition each product team took ownership of their features on Android. A core integration team regression tests and focuses on global app optimization over individual features optimization.
On each day of the 3-day conference at the inviting environs offered at the Hyatt there was a jam-packed schedule of speakers, exhibits and activities that made for some difficult decisions as to which tracks and what happening to attend.
Facebook has open-sourced Presto, their distributed SQL query engine. Presto uses a pipelined architecture rather than the Map/Reduce design found elsewhere. In production since early this year, Facebook has since “deployed in multiple geographical regions and [they] have successfully scaled a single cluster to 1,000 nodes”.
Ajax Control Toolkit has been updated to support jQuery and includes a new Twitter control which takes advantage of new Twitter API. It also includes an improved documentation which describes the usage of ToolkitScriptManager.
For many of us Twitter has become an essential communications utility. Since experiencing scalability problems in 2010, Twitter has moved to a loosely coupled service oriented architecture based on the JVM, allowing it new levels of scalability and feature agility. Twitter engineering recently reported a new record throughput and took time out to describe their new architecture.
In the beginning of MBaaS, there was StackMob. Since then the mobile ecosystem has become flooded with competitors in this new approach to app dynamics. InfoQ takes a closer look at the Mobile Backend as a Service (MBaaS) provider StackMob and its privacy practices.