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  • Java

    RXJava by Example

    In the ongoing evolution of paradigms for simplifying concurrency under load, the most promising addition is reactive programming, a specification that provides tools for handling asynchronous streams of data and for managing flow-control, making it easier to reason about overall program design. In this article we overcome the learning curve with a gentle progression of examples.

    Victor Grazi
    on Sep 27, 2016
  • Java

    Java 9, OSGi and the Future of Modularity (Part 1)

    The flagship feature of Java 9 will be the new Java Platform Module System (JPMS). Given the maturity of OSGi there were technical, political and commercial reasons why another Java module system will soon exist. In this article we compare the two from a technical perspective and see how JPMS and OSGi can work together.

    Kai Hackbarth Neil Bartlett
    on Sep 22, 2016
  • Java

    Using Templates to Transform Web Service Results into Markup

    The HTTP-RPC open-source Java framework returns results in JSON by default, but can use the CTemplate system to respond with custom markup. In this article, Greg Brown shows how simple annotations can be used to automatically respond to a web service in any markup (HTML, XML, CSV, etc.).

    Greg Brown
    on Aug 31, 2016
  • AI, ML & Data Engineering

    Chris Fregly on the PANCAKE STACK Workshop and Data Pipelines

    InfoQ Interviews Chris Fregly, organizer for the 4000+ member Advanced Spark and TensorFlow Meetup about the PANCAKE STACK workshop, Spark and building data pipelines for a machine learning pipeline

    Dylan Raithel
    on Aug 29, 2016
  • Java

    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
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