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    Where Has the Java PermGen Gone?

    by Monica Beckwith Follow 470 Followers on  Jul 07, 2014 4

    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”.

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    Getting Started with HotSpot and OpenJDK

    by Ben Evans Follow 18 Followers on  Aug 27, 2013 2

    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.

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    Virtual Panel: Performance Tuning Face-Off

    by Victor Grazi Follow 17 Followers on  Jun 25, 2013 1

    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

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Benchmarking JVM Concurrency Options for Java, Scala and Akka

Posted by Michael Slinn Follow 0 Followers on  Apr 26, 2012

Michael Slinn examines how to benchmark JVM concurrency options for JVM-based langauges including Java and Scala. 2

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Martin Odersky on Typesafe Stack and the Future of Scala

Posted by Michael Floyd Follow 0 Followers on  Mar 12, 2012

In this Q&A 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. 1

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

Posted by Charles Humble Follow 703 Followers on  Feb 01, 2012

Java Performance, by Charlie Hunt and Binu John, provides performance tuning advice for both Java SE and EE applications. InfoQ reviews the book, and talks to the authors about their approach.

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Scala.Net and Scala with Martin Odersky

Posted by Michael Stal Follow 0 Followers on  Aug 17, 2011

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

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

Posted by Charles Humble Follow 703 Followers on  Jul 04, 2011

While still a major user of Ruby and Rails, Twitter has gradually been moving more and more of its stack to Java and Scala. InfoQ spoke to Twitter engineer Evan Weaver to find out more. 13

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The Azul Garbage Collector

Posted by Charles Humble Follow 703 Followers on  Feb 24, 2011

InfoQ examines how Azul's collector works, and explores some techniques you can use to test the impact of garbage collection in your applications.

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

Posted by Dio Synodinos Follow 3 Followers on  Jan 24, 2011

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

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The State of JRuby: 1.5, AOT, Java 7

Posted by Werner Schuster Follow 4 Followers on  Jun 02, 2010

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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JSR 292 and the Multi-lingual JVM

Posted by Charles Humble Follow 703 Followers on  Apr 27, 2010

Java 7 aims to improve support for dynamic languages through JSR 292. InfoQ takes a detailed look at the problems JSR 292 solves, and talks to JRuby lead Charles Nutter about JSR 292 in practice. 5

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