Latest Articles

Control RGB LEDs Using Android and Arduino

This is an interesting topic because two ecosystems are mixed together and integrated. By picking a color from an app running on your Android smartphone, we will make an Arduino switch on a RGB LED of that same color.

April 7, 2016

by Francesco Azzola

· 13,797 Views · 7 Likes

Log4j 2 Configuration Using YAML

A hands-on tutorial on configuring Log4J using YAML.

April 6, 2016

by John Thompson

· 50,828 Views · 4 Likes

Weekly Top 10: Your DevOps Flavor

Some of the best DevOps links from around the web, courtesy of Electric Cloud.

April 6, 2016

by Anders Wallgren

· 5,289 Views · 1 Like

The Singleton Pattern, 20 Years Later

Everybody loves the Singleton because, conceptually, it seems the easiest of the lot to understand and (in most post-1995 languages) the easiest to implement. But everybody hates it because its singleton-y nature means it is a natural target for concurrency problems.

April 6, 2016

by Ted Neward

· 23,368 Views · 13 Likes

Precision and Recall by Example: The Two Pillars of Search Relevance

An excerpt from the upcoming book Relevant Search on the fundamentals of search relevance.

April 6, 2016

by Doug Turnbull

· 10,764 Views · 7 Likes

Singleton Implementation in C#

Once again, we follow along with Ted Neward's excellent Singleton adventure... this time let's see one in C#.

April 6, 2016

by Ted Neward

· 7,663 Views · 5 Likes

Basic CRUD Operations Using cx_Oracle, Part 1: Setup

In this series, we’re going to take a look at performing CRUD (Create Retrieve Update Delete) operations using the cx_Oracle driver. Read on to see the initial setup.

April 6, 2016

by Blaine Carter

· 6,085 Views · 2 Likes

XML Digital Signatures and JAXB: The Less DOMinant Approach

Working with the XML Digital Signature Standard should be a straight-forward affair, but if you're using JAXB instead of DOM, what can you do? This article details my journey of trying to get these two technologies to play nicely together.

April 6, 2016

by Duncan Brown

· 20,739 Views · 4 Likes

Java: Immortal Objects and Object Resurrection

Learn how to make immortal Java objects by resurrecting objects that are about to be removed by Java's Garbage Collector. By using object resurrection, you can make your objects live as long as you want, without changing the applications that are using your objects.

April 5, 2016

by Per-Åke Minborg

· 19,925 Views · 14 Likes

Best Buy will Not Issue API Keys to Free Email Accounts and Wants to Get to Know Your Company

API Evangelist Kin Lane talks about retailer Best Buy's API key distribution decision.

April 5, 2016

by Kin Lane

· 9,244 Views · 1 Like

Gradle Compile-only Dependencies

Compile-only dependencies can now be declared for all Java projects using the Java plugin from Gradle.

April 5, 2016

by Mark Vieira

· 20,868 Views · 4 Likes

Verifying Datetime and Date With Hamcrest

The hamcrest-date library is a great tool for verifying dates in JUnit tests with Hamcrest.

April 5, 2016

by Lubos Krnac

· 34,608 Views · 4 Likes

The Importance of Immutability in Java

We all know immutability is important, but do you know why or how to achieve it in Java? This post is a one stop shop guide to the challenge.

April 5, 2016

by Sam Atkinson

· 36,752 Views · 27 Likes

Five Guidelines for Building a Log Management System

When you're building a log management system, here are some things to keep in mind in order to enable better transparency, streamline operations, and support DevOps methods.

April 5, 2016

by Daniel Berman

· 8,322 Views · 4 Likes

A Data Lake Architecture With Hadoop and Open Source Search Engines

"Big data" and "data lake" only have meaning to an organization’s vision when they solve business problems by enabling data democratization, re-use, exploration, and analytics. Read on to learn what a data lake is, its various benefits, and what's to come.

April 4, 2016

by Carlos Maroto

· 36,035 Views · 6 Likes

Retry Handling With Spring-Retry

Proper retry handling can reduce a lot of issues when software components fail to communicate with each other for any reason.

April 4, 2016

by Michael Scharhag

· 39,410 Views · 9 Likes

Create UML Diagrams With Simple DSLs in Eclipse and IntelliJ

How to create flow chart diagrams for whatever DSL you may be using in popular IDEs.

April 4, 2016

by Lubos Krnac

· 38,148 Views · 20 Likes

Creating a Homemade Retrospective Game

Zone Leader John Vester talks about a restrospective you can create at home that plays a lot like a famous board game...

April 4, 2016

by John Vester

CORE

· 8,231 Views · 1 Like

ANTLR 4 with Python 2 Detailed Example

ANTLR 4 introduced a handy listener-based API, but sometimes it's better not to use it.

April 4, 2016

by Alan Hohn

· 25,762 Views · 1 Like

The Good, the Bad, and the Ugly Among Redis Pagination Strategies

If you need to use pagination in your Redis app, there are a couple of strategies you can use to achieve the necessary functionality. While pagination can be challenging, a quick overview of each of these techniques should be helpful in making your job of choosing a method and implementing it a little easier.

April 4, 2016

by Darren Perucci

· 14,728 Views · 4 Likes

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