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JUnit 5 - An Early Test Drive - Part 2

JUnit, Java's most ubiquitous testing framework, is getting an update. In part one of our JUnit 5 coverage, we looked at how we got here and wrote some preliminary tests. In part two, we take a closer look at how to run tests and at some of the very cool new features JUnit 5 brings to the table for us developers.

Nicolai Parlog
on Aug 15, 2016
Java

Working with Multiple Databases in Spring

Accessing multiple databases in enterprise applications can be a challenge. With Spring it is easy enough to define a common data source, but once we introduce multiple data sources things get tricky. This article demos a technique for accessing multiple databases in Spring Boot applications easily and with minimum configuration.

Aaron Jacobson
on Jul 30, 2016
Java

JUnit 5 - An Early Test Drive - Part 1

JUnit, Java's most ubiquitous testing framework, is getting an update. Yes, JUnit 5 is a complete rewrite that decouples "JUnit the Platform" from "JUnit the Tool" and makes the platform available to other testing frameworks, which might very well redefine the future of testing on the JVM. More than that, it evolves the API and has a very promising extension model.

Nicolai Parlog
on Jul 19, 2016
Java

HTTP-RPC: A Lightweight Cross-Platform REST Framework

HTTP-RPC is an open-source framework allowing developers to create and access cross-platform polyglot RESTful web services using a convenient, RPC-like metaphor, while preserving fundamental REST principles such as statelessness and uniform resource access.

Greg Brown
on Jul 12, 2016
Java

What the JIT!? Anatomy of the OpenJDK HotSpot VM

If you've ever wondered what happens when your bytecode executes, join former Oracle G1GC performance-lead Monica Beckwith in her guided tour of just-in-time (JIT) compilation and runtime optimizations in OpenJDK HotSpot VM.

Monica Beckwith
on Jun 28, 2016
Java

Configure Once, Run Everywhere: Decoupling Configuration and Runtime

Configuration is one of the most widely used cross-cutting concerns in application development. Apache Tamaya is a new incubator project that brings standardized property management to Java.

Anatole Tresch
on Jun 17, 2016
Java

Living in the Matrix with Bytecode Manipulation

In this article we take a deep dive into two popular bytecode manipulation frameworks: Javassist & ASM. Bytecode manipulation is used in Java libraries like Spring and Hibernate, most JVM languages and even your IDE. For this reason, and because it’s really quite fun, it is a valuable skillset to learn for performing tasks that are otherwise impossible. And once you learn it, the sky's the limit!

Victor Grazi
on May 26, 2016
Java

Locating Common Micro Service Performance Anti-Patterns

In this second installment on diagnosing performance issues, performance engineer Andreas Grabner focuses on spotting patterns that cause performance and scalability issues in distributed Micro Service Oriented Architectures.

Andreas Grabner
on May 03, 2016
Web Development

Angular 2 and TypeScript - A High Level Overview

AngularJS has become the world's most popular JavaScript framework for creating web applications. And now Angular 2 and TypeScript have brought true object oriented web development to the mainstream, using a syntax that is strikingly close to Java 8. In this article we provide a high-level overview of the Angular 2 framework.

Yakov Fain
on Apr 26, 2016
Java

High Load Trading Transaction Processing with Reveno CQRS/Event Sourcing Framework

Reveno is a powerful new, easy to use, highly performant, JVM based lock-free transaction processing framework based on CQRS and event-sourcing patterns. In this article we will develop a simple trading system implementation using the Reveno framework.

Artem Dmitriev
on Mar 29, 2016
Java

Invokedynamic - Java’s Secret Weapon

invokedynamic was the first new Java bytecode since Java 1.0 and was crucial in implementing the "headline" features of Java 8 (such as lambdas and default methods). In this article, we take a deep dive into invokedynamic and explain why it is such a powerful tool for the Java platform and for JVM languages such as JRuby and Nashorn.

Ben Evans
on Mar 22, 2016
Java

Beyond Page Objects: Next Generation Test Automation with Serenity and the Screenplay Pattern

Automated acceptance testing reduces time wasted in manual testing and bug fixing, and when combined with Behaviour-Driven Development, can guide development effort. But it requires skill, practice and discipline. The Screenplay Pattern helps teams address these difficulties and is where you may end up by mercilessly refactoring Page Objects using SOLID design principles.

Jan Molak Antony Marcano John Ferguson Smart Andy Palmer
on Mar 15, 2016

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