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Xen Project Releases 1.0 of Mirage OS

by Chris Swan on  Dec 23, 2013

Mirage OS is a ‘cloud operating system’ that seeks to avoid security vulnerabilities and bloat by facilitating the creation of single purpose virtual appliances. Applications are developed in the OCaml functional programming language and compiled into standalone ‘unikernels’ that run directly on the Xen hypervisor.

Vaughn Vernon: Reactive Domain-Driven Design

by Jan Stenberg on  Nov 19, 2013 1

Vaughn Vernon, author of Implementing Domain-Driven Design, recently talked about using Scala and the Actor Model implementation Akka together with Doman-Driven Design as a means to remove some of the architecture overhead typically found in event-driven or hexagonal architectures.

Oracle Releases Videos and Slides from the 2013 JVM Language Summit

by Alex Blewitt on  Nov 15, 2013 1

Oracle have released videos and slides from the 2013 JVM Language Summit, which saw uses of the JVM from the biggest data to the smallest mobiles, and future performance advances in the JVM runtime. Read on to find out more about what was covered.

Core.Typed Adds an Optional Type System to Clojure

by Mirko Stocker on  Oct 07, 2013

core.typed adds an optional type system to Clojure, aiming to combine the best of both worlds: the brevity and flexibility of Clojure and the safety guarantees that a type-checker provides.

Java 8 Developer Preview Released

by Charles Humble on  Sep 11, 2013

Oracle has released the first developer preview of Java 8 for the full range of platforms (Windows, Max OS X, Linux, Solaris).

FP Complete Launches Browser Based Haskell IDE

by Mirko Stocker on  Sep 10, 2013

FP Complete has launched Haskell Center, their new Haskell IDE and application server. The IDE is browser based, and together with their application server, should make it much easier to create and run web based Haskell programs.

Reactive Programming as an Emerging Trend

by Dio Synodinos on  Aug 28, 2013 2

Reactive programming (RP) is based on data flows and the propagation of change, with the underlying execution model of a programming language automatically propagating changes through the data flow. With the popularity of event-driven, scalable, and interactive architectures both on the server and the client, the concept of  “reactiveness” is increasingly gaining attention.

Scaling Twitter to New Peaks

by Saul Caganoff on  Aug 26, 2013

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.

High Performance Immutable Arrays in .NET

by Jonathan Allen on  Jun 25, 2013 1

In the newest drop of Immutable Collections for .NET we get ImmutableArray, a faster alternative to ImmutableList in read-only scenarios. Also, Jon Skeet offers some interesting performance trivia for arrays on the CLR.

Compile Scala to JavaScript With Scala.js

by Zef Hemel on  Jun 20, 2013

At the Scala Day last week, Sébastien Doeraene presented Scala.js, a Scala to JavaScript compiler. The compiler supports the full Scala language allowing its users to build web applications front to back in Scala and potentially reuse code between the server and the client.

The Database as a Value

by Zef Hemel on  Jun 14, 2013

During QCon New York 2013, Rich Hickey gave a talk on functional databases. Hickey is well known for creating the Clojure programming language and is currently developing Datomic, which is a functional database. During his talk, Hickey argued that the useful properties of functional languages: data as values and pure functions, are just as useful in the context of databases.

Making Immutable Object Graphs Easier in C#

by Jonathan Allen on  May 10, 2013 1

Creating a simple immutable class in C# is easy, but eventually you’ll want to create deep graphs that, for efficiencies sake, should be created via a builder. Or perhaps you want to make non-destructive updates by creating methods. Building out all these builders and methods can be quite tedious and thus error prone. Andrew L Arnott offers a solution that relies on T4 based code generators.

More on Immutable Collections in .NET

by Jonathan Allen on  Apr 19, 2013

Since we last reported on Immutable Collections in January, the API has evolved and a lot more has been revealed about the inner workings.

Erlang/OTP R16B Brings Improved Parallelism

by Jeff Martin on  Mar 07, 2013

The newley released Erlang/OTP R16B brings several performance enhancements among its new features. Code modules can now be loaded in a non-blocking manner, networking code for ports has been improved, and VM processes have been parallelized.

Chef 11 is Ready for Hyperscale

by Aslan Brooke on  Feb 20, 2013

Opscode released Chef 11 early this month with enhancements to its scalability to meet the demands of hyperscale web operations. Opscode rewrote the entire server core API in Erlang and at the same time kept it backward compatible. Opscode renamed the core server API "Erchef" to complement the rewrite in Erlang.

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