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Chronicle and the Micro-Cloud

Overview A common question I face is; how do you scale a Chronicle based system if it is single writer, multiple readers. While there are solutions to this problem, it is far more likely ...
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ListenableFuture in Guava

ListenableFuture in Guava is an attempt to define consistent API for Future objects to register completion callbacks. With the ability to add callback when Future completes, we can ...
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java.util.concurrent.Future basics

Hereby I am starting a series of articles about future concept in programming languages (also known as promises or delays) with a working title: Back to the Future. Futures are very ...
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How expensive is a method call in Java

We have all been there. Looking at the poorly designed code while listening to the author’s explanations about how one should never sacrifice performance over design. And you just ...
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Analysing a Java Core Dump

In this post, I will show you how you can debug a Java core file to see what caused your JVM to crash. I will be using a core file I generated in my previous post: Generating a Java ...
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Testing Expected Exceptions with JUnit Rules

This post shows how to test for expected exceptions using JUnit. Let’s start with the following class that we wish to test:                   public ...
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Java 7: Fork/Join Framework Example

The Fork/Join Framework in Java 7 is designed for work that can be broken down into smaller tasks and the results of those tasks combined to produce the final result. In general, classes ...
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Increased compile-time safety with phantom types

Introduction Using phantom types is a very simple technique that can be used to increase the compile-time safety of code. There are a lot of potential use cases with different levels ...
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Singleton Design Pattern – An introspection and best practices

Definition: Singleton is a part of Gang of Four design pattern and it is categorized under creational design patterns. In this article we are going to take a deeper look into the usage ...
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Bloated JavaBeans – Don’t Add “Getters” to Your API

I have recently blogged about an idea how JavaBeans™ could be extended to reduce the bloat created by this widely-accepted convention in the Java world. That article was reblogged ...
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