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  • DukeScript: A New Attempt to Run Java Everywhere

    DukeScript is a technology meant to bring Java to every client, mobile or desktop, without the need of a plug-in. In spite of its misleading name, DukeScript is not a new scripting language but an attempt to “put Java back in JavaScript”, in an attempt to fulfill the initial vision for Java: Write Once, Run Everywhere.

  • Where Has the Java PermGen Gone?

    Prior to JDK8 class metadata and constants would live in an area called the “permanent generation”, contiguous with the Java heap. One problem was that If the class metadata size is beyond the allocated bounds your app would run out of memory. With the advent of JDK8 we no longer have PermGen. The space where it was held has now moved to native memory to an area known as the “Metaspace”.

  • Getting Started with HotSpot and OpenJDK

    In this article, we look at the HotSpot Java Virtual Machine, and its implementation in the OpenJDK, both from a VM perspective and also in terms of its interaction with the Java class libraries.

  • Virtual Panel: Performance Tuning Face-Off

    In the world of application delivery, performance tuning still seems to elude the mainstream. InfoQ spoke to five luminaries of the performance monitoring space about why and what can be done. The result was quite an active debate. Members of the virtual panel: • Ben Evans • Charlie Hunt • Kirk Pepperdine • Martin Thompson • Monica Beckwith

  • Benchmarking JVM Concurrency Options for Java, Scala and Akka

    Michael Slinn examines how to benchmark JVM concurrency options for JVM-based langauges including Java and Scala.

  • Martin Odersky on Typesafe Stack and the Future of Scala

    In this interview with InfoQ's Editor in Chief, Michael Floyd, Martin Odersky draws the comparisons between F# and Scala, discusses the future of Scala, and addresses once and for all the question of breaking binary compatibility. He also discusses his current work on the implementation of the value class proposal, how Java might support functional programming and the new Typesafe Stack 2.0.

  • Book Review and Interview: Java Performance, by Charlie Hunt and Binu John

    Java Performance, by Charlie Hunt and Binu John, provides performance tuning advice for both Java SE and EE applications. Specifically, it provides information on performance monitoring, profiling, tuning HotSpot, and Java EE application performance tuning. InfoQ reviews the book, and talks to the authors about their approach.

  • Scala.Net and Scala with Martin Odersky

    Scala.Net will be a version of Scala that supports the .NET ecosystem. We talked with Martin Odersky, Chairman and Chief Architect as well as co-founder of Typesafe, about Scala.Net, the version of Scala that support .Net as well as about Scala in general.

  • Twitter Shifting More Code to JVM, Citing Performance and Encapsulation As Primary Drivers

    While it almost certainly remains the largest Ruby on Rails based site in the world, Twitter has gradually been moving more and more of its stack to the JVM. Last year the company announced that its back-end message queue had been re-written in Scala, and more recently it moved the search stack to Java, making Twitter search around three times faster.

  • The Azul Garbage Collector

    Azul's recently announced Zing product brings their Garbage Collector, which achieves both pauseless garbage collection and a high tolerance to the factors which typically impact collection and application responsiveness, to Java programs running on Intel and AMD based servers. This article takes a detailed look at how Azul has been able to achieve these design goals.

  • Asynchronous, Event-Driven Web Servers for the JVM: Deft and Loft

    Asynchronous, event-driven architectures have been gaining a lot of attention lately, mostly with respect to JavaScript and Node.js. Deft and Loft are two solutions that bring "asynchronous purity" to the JVM.

  • The State of JRuby: 1.5, AOT, Java 7

    InfoQ caught up with Charles Nutter to talk about the state of JRuby: the 1.5 release, Ahead of Time compilation, and what's coming up in 1.6 and with features in Java 7.

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