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Redesigning Hamcrest

I’ve done a few posts on the Hamcrest library, and I really do enjoy using it, but there are a few changes I would love to make to it. I understand most of the design decisions that ...
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Java Lambdas and Low Latency

Overview The main question around the use of Lambdas in Java and Low Latency is; Does they produce garbage and is there anything you can do about it? Background I am working on a library ...
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Burning Down The House–Agile Remix

Burn-down charts are awesome. They are part of agile’s set feedback loops. Take a look at a burn-down chart, and it will tell you if you’re on track or not. Here’s a simple example:               Note ...
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Suis-je Groovy? No! What Pivotal’s Decision Means for Open Source Software

Today there was great news in the JVM ecosystem. Pivotal, the company who is committed to OSS has become a bit less committed:The reaction in the community were largely summarised ...
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EE Servlet 3: Developing User Login with Session and Filter

I have introduced the Application class in my previous post where you can setup backend services. One example service I added is the UserService. This service will load a Java users ...
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Grails chained select – load data on one dropdown box depending on another

This tutorial will show how to create two select boxes where the second select box’s items are affected by the value of the first one. Developers encounters this commonly and ...
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Grails render images on the fly in GSP

This tutorial will show how to generate PNG images on the fly and display inside a GSP. This can serve as a basis on how to create a more complex behavior. For example, creating report ...
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Microservices in the Enterprise: Friend or Foe?

A micro approach to a macro problem? The microservice hype is everywhere, and although the industry can’t seem to agree on an exact definition, we are repeatedly told that moving ...
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Infinite Loops. Or: Anything that Can Possibly Go Wrong, Does.

A wise man once said: Anything that can possibly go wrong, does – Murphy Some programmers are wise men, thus a wise programmer once said: A good programmer is someone who looks both ...
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Java Flight Recorder (JFR)

JFR is a Java profiler which will allow you to investigate the runtime characteristics of your code. Typically you will use a profiler to determine which parts of your code are causing ...
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