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Modular Java Applications with OSGi

Posted by Alex Blewitt  on  May 12, 2016

Alex Blewitt introduces modularity in general, and the choices that OSGi made in bringing modularization to the JVM. He also looks ahead and asks how OSGi and Jigsaw will evolve in the future.


Examining Low Pause Garbage Collection in Java

Posted by John Oliver  on  Apr 26, 2016 1

John Oliver takes a look at both G1 and Shenandoah, explaining how they work, what are their limitations, providing tuning advice. He also looks at recent and future changes to garbage collection.


Immutable Infrastructure: Rise of the Machine Images

Posted by Axel Fontaine  on  Apr 24, 2016 2

Axel Fontaine looks at what Immutable Infrastructure is and how it affects scaling, logging, sessions, configuration, service discovery and more.


Java 9 - The (G1) GC Awakens!

Posted by Monica Beckwith  on  Apr 24, 2016 5

Monica Beckwith talks about G1 pause (young and mixed) composition, G1's remembered sets and collection set and G1's concurrent marking algorithm, providing performance tuning advice.


Hot Code is Faster Code - Addressing JVM Warm-up

Posted by Mark Price  on  Apr 23, 2016

Mark Price explores the life cycle of Java code, and how the JVM evolves the runtime representation of code during program execution, providing tips to make sure Java code runs fast.


Understanding HotSpot JVM Performance with JITWatch

Posted by Chris Newland  on  Apr 15, 2016

Chris Newland discusses performance-boosting techniques used by the JVM’s JIT and introduces JITWatch, a tool helping to get the best JVM performance for a code.


Life of a Twitter JVM Engineer

Posted by Tony Printezis  on  Apr 10, 2016

Tony Printezis presents how services are deployed and monitored at Twitter, the benefits of using a custom-built JVM, and the challenges of the use of the JVM in an environment like Twitter.


Node4J: Running Node.js in a JavaWorld

Posted by Ian Bull  on  Apr 02, 2016

Ian Bull introduces Node4J and explores the performance characteristics and highlights the tools that help one develop, debug and deploy Node.JS applications running directly on the JVM.


What It Means to be Just In Time

Posted by Ashley Puls  on  Mar 03, 2016 1

Ashley Puls explains what happens to bytecode inside the JVM. It begins with an overview of the Just In Time (JIT) compiler and discusses JIT optimizations such as method inlining and loop unrolling.


Explorations of the Three Legged Performance Stool

Posted by Charlie Hunt  on  Feb 11, 2016

Charlie Hunt explains the three performance attributes of throughput, latency and (memory) footprint and how each of these are influenced in terms of JVM garbage collection.


Netty @Apple: Large Scale Deployment/Connectivity

Posted by Norman Maurer  on  Jan 06, 2016

Norman Maurer presents how Apple uses Netty for its Java based services and the challenges of doing so, including how they enhanced performance by participating in the Netty open source community.


DIY Monitoring: Build Your Own JVM Performance Management Tool

Posted by Tal Weiss  on  Dec 17, 2015

Tal Weiss shows how you can easily write your own JVM agent to capture accurate performance data for virtually any type of application from Java microservices to reactive actor systems in Scala.

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