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.
Inspired by the photo “Melly Shum hates her job”, Jurgen Appelo, Maarten Volders and Vasco Duarto initiated Happy Melly with the purpose to help people to become happy workers and live better lives. The Happy Melly business has now taken off to help organizations to survive in changing environments, with happy workers that are motivated to engage and contribute.
Vision Mobile is a UK think tank whose periodic reports are geared to assist mobile developers and other players in the vast mobile ecosystem in making sense of the cacophony of mobile trends. Their reports provide informed guidance that can help devs make the best decision about where to concentrate their marketing efforts.
This article contains details on the recently open sourced Buck and xctool, the build tools used internally by Facebook for their native Android and iOS applications.
Part 2 of Infoq’s exclusive virtual interview with Anypresence cofounder Richard Mendis. The CMO weighs in on Facebook’s acquisition of competitor Parse and provides intel on the pricing structure of Anypresence.