Typesafe has announced the early preview of Akka Streams, an open source implementation of the Reactive Streams draft specification using an Actor-based implementation. Reactive Streams is an initiative to provide a standard for asynchronous stream processing with non-blocking back pressure on the JVM. Back pressure in needed to make sure the data producer doesn't overwhelm the data consumer.
Latest version of the Akka toolkit, an implementation of Actor Model, comes with persistence enabling stateful actors to persist their internal state, together with support for Java 8 lambda expressions.
Version 2.0 of Slick, a Functional-Relational Mapping, FRM, library for Scala, (corresponding to an Object-Relational Mapper, ORM, for object-oriented languages), was recently released with a code generator for reverse-engineering a database schema and new driver architecture to allow support for non-SQL databases.
Ten years ago today, the first release of the Scala language was announced on the comp.lang.scala newsgroup. It's come a long way in ten years; what will the next ten years be like? InfoQ looks back.
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 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, aiming to combine the best of both worlds: the brevity and flexibility of Clojure and the safety guarantees that a type-checker provides.
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.
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.
ZeroTurnaround, the vendor behind the popular JRebel and LiveRebel JVM plugins, which accelerate the Java development cycle and automate app deployments to live environments without downtime, have announced a new research and content organisation called Rebel Labs. The organisation will, they claim, offer free, vendor-neutral technical resources for the Java community.
JetBrains has announced IntelliJ IDEA 12 having a better compiler, support for Java 8, an Android UI Designer, a new look, better Spring and Play 2.0 support, and a large number of enhancements across supported languages and frameworks.
InfoQ's research initiative continues with an 12th question: "What's Your Next JVM Language?". This is a new service we hope will provide you with up-to-date & bias-free community-based insight into trends & behaviors that affect enterprise software development. Unlike traditional vendor/analyst-based research, our research is based on answers provided by YOU.
Twitter's infamous Fail Whale was absent on US presidential election day, even as Twitter's servers were handling a serge of 327,452 "tweets" per minute. The firm was able to handle this level of traffic thanks in part to a gradual shift away from Ruby to Java and Scala