Daniel Shaya

Daniel has been programming in Java since it was in beta. Working predominantly in the finance industry he has created real time trading and margin risk applications. He is currently a director at OpenHFT where we are building next generation Java low latency products.

Core Java
Daniel ShayaFebruary 16th, 2015
0 143
How to detect and diagnose slow code in production
One of the more difficult tasks that a developer faces is finding and diagnosing slow running code in production. Firstly…
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Core Java
Daniel ShayaFebruary 6th, 2015
2 243
JMH: How to setup and run a JMH benchmark
Health Warning! This post describes how to setup and run a simple JMH benchmark. Micro benchmarks are notoriously difficult to get…
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Enterprise Java
Daniel ShayaFebruary 6th, 2015
0 36
Maven Tip: All about executable jars
Maven Tip: All about executable jars An executable jar is an extremely useful artefact when it comes to distributing your…
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Core Java
Daniel ShayaFebruary 4th, 2015
0 887
Java8 Multi-threading ForkJoinPool: Dealing with exceptions
One of the main motivations behind the introduction of Java8 lambdas was the ability to be able to use multicores…
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Core Java
Daniel ShayaJanuary 27th, 2015
0 47
Java8 Lambdas: Sorting Performance Pitfall EXPLAINED
Written in collaboration with Peter Lawrey. A few days ago I raised a serious problem with the performance of sorting…
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Core Java
Daniel ShayaJanuary 20th, 2015
2 101
Java Flight Recorder (JFR)
JFR is a Java profiler which will allow you to investigate the runtime characteristics of your code. Typically you will…
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Core Java
Daniel ShayaJanuary 14th, 2015
4 132
Java8 Sorting – Performance Pitfall
Java 8 brings all the goodness of lambdas to enable us to program using a declarative style. But is it…
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Core Java
Daniel ShayaJanuary 13th, 2015
3 53
My favourite Java puzzler 2 + 1 = 4
Here’s my current favourite Java puzzler. How can you get your code to do this? …
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Software Development
Daniel ShayaJanuary 12th, 2015
0 60
First rule of performance optimisation
Let’s start with a system with no obvious performance bottlenecks. By that I mean that there are no glaring algorithmic…
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