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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
Java

Book Review: All About Java 8 Lambdas

Billed as a Weekend Read, the All About Java 8 Lambdas book covers much more than just lambdas; it covers default and static methods in interfaces, method references, optional values and primitive/object streams. It’s the book to read if you know Java and need to get up to speed on Java 8. Read on for InfoQ’s review.

Alex Blewitt
on Mar 08, 2016
Java

Automate Deployment & Management of Docker Cloud/Virtual Java Microservices with DCHQ

This article demonstrates a solution for automating the build, deployment and management of a Docker Java microservices application on any cloud or virtualization platform. We extend an existing money transfer application consisting of event sourcing, CQRS and Docker, to run and manage this app on 13 different clouds and virtualization platforms.

Amjad Afanah
on Feb 23, 2016
Development

Clojure in Action, Second Edition, Review and Authors Q&A

Clojure in Action, written by Amit Rahore and Francis Avila, is an essential, thorough, and well organized introduction to Clojure 1.6 that explores the core parts of the language while introducing the reader to Clojure's pragmatic and idiomatic nature. InfoQ has spoken with Francis Avila to learn more about his book, Clojure's advantages, and its future.

Sergio De Simone
on Feb 17, 2016
Java

Diagnosing Common Database Performance Hotspots in our Java Code

Java performance issues are often attributable to bad database access patterns. In this article a top performance field engineer demonstrates his patterns for diagnosing database related issues.

Harald Zeitlhofer Andreas Grabner
on Feb 16, 2016
Java

IAP: Fast, Versatile Alternative to HTTP

Jakob Jenkov's organization has analyzed the modern application stack, including high level architectures, concrete technologies like databases, query languages, messaging, distributed computing models, & network protocols, and constructed the next gen alternative to HTTP. IAP is the resulting emerging standard protocol, and ION the high speed alternative to JSON and Protocol Buffers.

Jakob Jenkov
on Feb 02, 2016
Development

Clojure Recipes Review and Q&A

Addison Wesley’s Clojure Recipes is a new book that aims to help developers to get deeper into Clojure, moving from a generic understanding of the language features and syntax to setting up more complex projects that integrate external libraries. The book contains a collection of "weekend" projects targeting web client and server apps, implementing DSLs, using Datomic, Cascalog, Hadoop, etc.

Sergio De Simone
on Jan 25, 2016

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