Agrona’s Threadsafe Offheap Buffers

This blog post continues my ongoing series on the Agrona library by explaining how we offer easy access to offheap…

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Readable code is code that looks like the problem statement

Background In a recent blog post I showed how you could use Java’s labels as a way to clarify the…

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Given When Then in Java

tl;dr you can use labels to clarify a given-when-then style of testing. What is given-when-then? given-when-then is a commonly used…

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Java Debuggers and Timeouts

How to use your debugger in the presence of timeouts in your code. My kingdom for a debugger! So you’ve…

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Too Fast, Too Megamorphic: what influences method call performance in Java?

Whats this all about then? Let’s start with a short story. A few weeks back I proposed a change on…

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An open source JVM Sampling Profiler

It’s a well known deficiency of most existing sampling Java profilers that their collection of stack traces has to happen…

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Javaone 2013 Review

tl;dr I attended Javaone again this year. It was fun. Sunday The conference kicked off on Sunday, with user group…

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Performance tests for slow networks with tc

tl;dr: you can easily replicate slow network conditions which makes it easier to performance test them. Smartphones have made both…

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Garbage Collection in Java (4)

G1: Garbage First The G1 collector is the latest collector to be implemented in the hotspot JVM. Its been a…

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