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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

Victor Grazi
on Jun 25, 2013
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.

Michael Slinn
on Apr 26, 2012
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.

Michael Floyd
on Mar 12, 2012
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.

Charles Humble
on Feb 01, 2012
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.

Michael Stal
on Aug 17, 2011
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.

Charles Humble
on Jul 04, 2011
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.

Charles Humble
on Feb 24, 2011
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.

Dio Synodinos
on Jan 24, 2011
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.

Werner Schuster
on Jun 02, 2010
JSR 292 and the Multi-lingual JVM

Java 7 is looking to improve support for dynamic languages using the Java Virtual Machine for their runtime environment. John Rose has been leading a project to explore some options, and JSR 292 will standardise some of this work for Java 7. InfoQ takes a look at the problems JSR 292 solves, and talks to JRuby lead Charles Nutter to find out more about InvokeDynamic in practice.

Charles Humble
on Apr 27, 2010
Memory Barriers and JVM Concurrency

Memory barriers, or fences, are a set of processor instructions used to apply ordering limitations on memory operations. This article explains the impact memory barriers have on the determinism of multi-threaded programs. We'll look at how memory barriers relate to JVM concurrency constructs such as volatile, synchronized and atomic conditionals.

Dennis Byrne
on Mar 08, 2010
Service Dynamics: the lazy man's way

This article describes "the hardest topic in OSGi, how to deal with service dynamics," based on personal experience. Two factors, concurrency and direct service references, make the problem "fiendishly hard." An import and an export policy should form a comprehensive doctrine for dealing with service dynamics and the article explores two export policies with their corresponding doctrines.

Todor Boev
on Jul 29, 2009

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