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Memory Barriers and JVM Concurrency

Memory barriers, or fences, are a set of processor instructions used to apply ordering limitations on memory operations. This article explains the impact memory barriers have on the determinism of multi-threaded programs. We'll look at how memory barriers relate to JVM concurrency constructs such as volatile, synchronized and atomic conditionals.

Dennis Byrne
on Mar 08, 2010
SOA Strategy and Spline Tactics

In this article, Michael Poulin discusses agility-to-market changes that IT can gain using a strategy oriented onto the services. Using concepts of service-orientation as the major construct of the technical product portfolio, accompanied by a techniques he calls Spline Tactics, he examines how businesses can achieve strategic agility.

Michael Poulin
on Mar 02, 2010
Book Excerpt and Interview: Cloud Computing and SOA Convergence in Your Enterprise: A Step-by-Step Guide

A new book by David Linthicum, Cloud Computing and SOA Convergence in Your Enterprise: A Step-by-Step Guide, describes how to get the enterprise ready for cloud computing by carefully modeling enterprise data, information services and processes in a service oriented manner to make the transition to providing and consuming cloud services easier.

Dilip Krishnan
on Feb 25, 2010
Business SOA Governance

Business SOA governance is about the long term transformation of IT to align with the business. This means establishing a clear business architecture and then creating a business SOA governance group who will ensure that vision is followed. This is a powerful group and needs to act in the same way as a judiciary. Their role is not to undertake the work but to enforce the boundaries and rules.

Steve Jones
on Feb 16, 2010
Scout - Extensible Server and Application Monitoring

Scout is an extensible server and application monitoring service which focuses upon ease of installation and configuration. Scout offers default alerts to help administrators understand how the application is behaving under various loads as well as allowing developers to create plugins to extend Scout.

Robert Bazinet
on Feb 16, 2010
A Comparison of Spring MVC and JAX-RS

SpringSource's Rossen Stoyanchev introduces the Spring MVC REST features available in Spring 3 and relates them to JAX-RS, highlighting the similarities and differences between the two programming models.

Rossen Stoyanchev
on Feb 10, 2010
Architecture & Design

Are You a Software Architect?

The line between development and architecture is tricky. Some say it's fake, that architecture is an extension of the design process undertaken by developers; others say it's a chasm that can only be crossed by lofty developers who believe you must abstract your abstractions and not worry about implementation details. There's a balance in the middle, but how do you move from one to the other?

Simon Brown
on Feb 09, 2010
Using ITIL V3 as a Foundation for SOA Governance

Those familiar with only ITIL V2 often scoff at the thought that ITIL could serve as a governance framework for SOA. Based on their perspective, they would be correct since V2 focused more heavily on operational processes rather than service lifecycle. With ITIL V3, the focus of the framework shifted toward what can only be accurately described as service-orientation.

JP Morgenthal
on Feb 05, 2010
Agile and SOA, Hand in Glove?

Agile is the hand that works in the glove. SOA is the glove, the scope is enterprise wide. Most principles of SOA and Agile are not in conflict. When they are, they keep each other sane. Agile development without a clear vision of the goals and objectives of the company is futile. SOA without a clear vision how to make it real using agile development principles is a waste of time and money.

Mary Beijleveld
on Feb 02, 2010
Resource-Oriented Architecture: Resource Metadata

In this second article in the Resource-Oriented Architecture series, Brian Sletten discusses the benefits of REST, what constitutes a resource, associating metadata with a resource, the pitfalls of common models of resource metadata, SPARQL, RDF, expressing RDF facts, RDF triples, querying RDF, and sample RDF queries.

Brian Sletten
on Jan 22, 2010
mySOA: Agile, Governed and Sustainable

William El Kaim, Lead Architect at Carlson Wagonlit, provides a rare glimpse at all the choices, and the rationale behind them, he and his colleagues have made while building their organization's Service Oriented Architecture. How does your SOA compare? What will be the major evolutions in the next few years? How will the Cloud impact current SOAs?

William El Kaim
on Jan 18, 2010
DSL Evolution

In this article, author Peter Bell discusses the best practices on how to evolve the DSLs using techniques like backwards compatibility through versioning, to automated transformation of statements.

Peter Bell
on Dec 22, 2009

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