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Building Reactive Systems Using Akka’s Actor Model and Domain-Driven Design

With the explosion of mobile and data-driven applications, users are demanding real-time access to everything everywhere. System resilience and responsiveness are essential business requirements. Businesses increasingly need to trade up to more flexible, "reactive" systems. To support reactive development, actor models with domain-driven design can fulfill modern resiliency requirements.

Hugh McKee Markus Eisele
on Oct 25, 2017
Java

The Java Evolution of Eclipse Collections

With each successive version of Java, frameworks must adapt and transform in order to stay current. This article aims to describe some of the new Java 8 features in Eclipse Collections, a high performance collections framework for Java, and looks ahead at some of the new things we’ve done to prepare for Java 9. This article will walk through these new features and changes.

Kristen O'Leary
on Oct 09, 2017
Java

Cost Reduction Strategies on Java Cloud Hosting Services

On the fly, automatic vertical scaling can lower the cost of exceeding VM limits, and gives flexibility in resource allocation. In this article we will cover techniques for determining whether automatic vertical scaling can help, and how to get it configured for your project.

Ruslan Synytsky
on Aug 29, 2017
Architecture & Design

Perspective on Architectural Fitness of Microservices

In this article we peel the onion of potential architectural fitness of microservices in the context of Master Data Management, and the challenges a microservices-based architecture may face when solving problem domains that require compute-intensive tasks, such as the calculation of expected losses on a portfolio of unsecured consumer credit.

Philippe Assouline
on Aug 21, 2017
Java

Automated Journey Testing with Cascade

Starting with a brief history of software testing, we investigate Cascade, a new framework for testing “journeys”, eliminating overlapping coverage to produce fast unit tests.

Robin de Villiers
on Aug 15, 2017
Java

Painlessly Migrating to Java Jigsaw Modules - a Case Study

This article is a case study of changes required in an application to make use of the new Java Platform Module System. An understanding of the module system will become an important skill for Java developers, using Java 9 and beyond.

Trisha Gee
on Jul 17, 2017
Java

Introducing Reladomo - Enterprise Open Source Java ORM, Batteries Included! (Part 2)

Goldman Sachs is widely known as a leader in investment banking, but they are very much a leading technology firm as well. Continuing our exploration of Reladomo, the primary Java ORM used at GS and now open source, GS Technology Fellow, Mohammad Rezaei looks at advanced features, such as sharding, caching, bitemporal access, performance, and testing.

Mohammad Rezaei
on Jun 13, 2017
Java

Under The Hood with the JVM's Automatic Resource Management

The deprecation of Object::finalize is an unusual step for the Java ecosystem. We dive deep into the Hotspot JVM to see how it works. We also compare it to RAII and the Java 7, try-with-resources syntax. The article contrasts these very different approaches to automatic resource management, and explains why TWR should be used in place of finalization by application programmers.

Ben Evans
on May 20, 2017
Java

Want to Know What’s in a GC Pause? Go Look at the GC Log!

Sometimes a superficial analysis of our application performance can incorrectly have the Garbage Collector point to itself. A proper GC log analysis can lead us past the “blame the collector” game. When this happens, we can make amazing discoveries that improve the performance and stability of our applications.

Kirk Pepperdine
on Apr 17, 2017
Web Development

More Than React, Part 2: How Binding.scala Makes Reusability Easy

In Part 2 of "More Than React", Yang Bo goes into what's required to reuse components in vanilla JavaScript, ReactJS, and Binding.scala. Through examples, Yang shows how Binding.scala makes creating and reusing components easy with minimal code, reducing complexity and boilerplate.

Yang Bo
on Apr 08, 2017
Java

Introducing Reladomo - Enterprise Open Source Java ORM, Batteries Included!

Goldman Sachs is widely known as a leader in investment banking, but they are very much a leading technology firm as well. Reladomo is the primary Java ORM used at GS, and it is now open source. In this article GS Technology Fellow, Mohammad Rezaei, takes us on a deep dive into Reladomo.

Mohammad Rezaei
on Mar 28, 2017
Java

Troubleshooting Memory Issues in Java Applications

Troubleshooting Java memory problems can be tricky, but the right approach and proper tools can simplify things substantially. The JVM reports a variety of OutOfMemoryError messages. In this article we address how to read them, and we take a look at a wide range of tools we can use to eradicate them.

Poonam Parhar
on Mar 09, 2017

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