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An Overview of the eXo Platform

In this article, Benjamin Mestrallet and Tugdual Grall provide an overview of the eXo platform, the Portlet 1.0 (JSR 168) and Portlet 2.0 (JSR 286) specifications. Topics covered include new features in the eXo Web 2.0 Portal, new capabilities in the Portlet 2.0 API, Inter-portlet communication, the eXo Java Content Repository, eXo Enterprise Content Management and the eXo business model.

Benjamin Mestrallet Tugdual Grall
on Jul 24, 2008
Building Scalability and Achieving Performance: A Virtual Panel

Join our industry-heavyweight (eBay, Betfair, FiveRuns and Twitter) panel as they explore the cost of making their sites as scalable as possible, whilst tuning to get the most performance they possibly can. They explore the pros-and-cons of making their apps as awesome as possible - all the while under the pressure of their business requirements.

James Cox
on Jul 22, 2008
Domain-Driven Design in an Evolving Architecture

Mat Wall and Nik Silver explain how their has been using Domain-Driven Design in an evolving and Agile environment, at high traffic news site guardian.co.uk.

Nik Silver Mat Wall
on Jul 22, 2008
Ruby's Open Classes - Or: How Not To Patch Like A Monkey

Ruby's Open Classes are powerful - but can easily be misused. This article looks at how to minimize the risk of opening classes, alternatives, and how other languages provide similar capabilities.

Werner Schuster
on Jul 11, 2008
Exploring LISP on the JVM

One of the most exciting things in the Java world right now is the work being done to get other programming languages to run on the virtual machine. There is a lot of buzz around JRuby, Groovy, Scala, and the JavaScript engine Rhino. But why stop there? If you really want to take a step outside the mainstream and dive into something completely different from Java, Lisp is a great option.

Per Jacobsson
on Jul 10, 2008
Introducing Multithreaded Programming to JavaScript

While increasingly more websites are fully or partially based on AJAX, it is still difficult to develop complicated AJAX applications. What is the main issue which causes this difficulty in developing AJAX applications? Is it asynchronous communication with the server, or is it GUI programming? How can a multithreading JavaScript library help to ease some of these issues?

Daisuke Maki translated by Daisuke Maki
on Jul 10, 2008
Beyond SOA: A New Type of Framework for Dynamic Business Applications - Part II

In this second part of their article, the authors explore the architecture of Dynamic Business Applications and introduce the concept of a Resource Container. They demonstrate how this architecture can be layered on top of JEE and how it impacts implementation productivity.

Michael Chervenic Vasile Buciuman-Coman
on Jul 07, 2008
Rationalizing the Presentation Tier

Thin client paradigm characterized by web applications is a kludge that needs to be repudiated. Old compromises are no longer needed and it's time to move the presentation tier to where it belongs. In this article, Ganesh Prasad and Peter Svensson explains how and why.

Ganesh Prasad Peter Svensson
on Jul 04, 2008
AtomServer – The Power of Publishing for Data Distribution

In this article, Bryon Jacob and Chris Berry introduce AtomServer, their implementation of a full-fledged Atom Store based on Apache Abdera. The authors spent the last year implementing an Atom Store for Homeaway, their employer, and are mnow making the Atom Store framework available as open source.

Chris Berry Bryon Jacob
on Jul 02, 2008
Development

An Introduction to Virtualization

It is easy to think that virtualization applies only to servers. In reality the recent resurgence of the concept is being applied at a variety of levels including networking, storage, and application infrastructure. In this introduction to the topic InfoQ dives into each area describing its uses as well as benefits and disadvantages.

Scott Delap
on Jul 02, 2008
Choosing between Routing and Orchestration in an ESB

In this article, Adrien Louis and Marc Dutoo discuss the differences and relative merits of using orchestration vs. routing in a typical ESB setup. They discuss various approaches to connecting services, from low level ones like customized routing, to high-level ones using business oriented approaches like workflow and orchestration, and conclude that there is no one-size-fits-all solution.

Adrien Louis Marc Dutoo
on Jul 02, 2008
Do Java 6 threading optimizations actually work? - Part II

Features like biased locking, lock coarsening, lock elision by escape analysis and adaptive spin locking are all designed to increase concurrency by allowing more effective sharing amongst application threads. But do they actually work? In this two part article, Jeroen Borgers explores these features and attempt to answer the performance question with the aid of a single threaded benchmark.

Jeroen Borgers
on Jun 27, 2008

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