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ESB Topology Alternatives

In this article, Adrien Louis discusses the pros and cons of two topology alternatives for ESB-based SOAs: A single ESB for the company vs. a system of "departmental" ESBs that are connected to each other. Adrien describes how the alternatives affect issues such as administration, business monitoring, governance, reliability, and orchestration.

Adrien Louis
on May 23, 2008
Scalability Principles

At the simplest level, scalability is about doing more of something. This could be responding to more user requests, executing more work or handling more data. This article presents some principles and guidelines for building scalable software systems.

Simon Brown
on May 21, 2008
Creating Product Owner Success

The role of the Scrum Product Owner is powerful, but challenging to implement. Success can bring a new and healthy relationship between customers/product management and development, even competitive advantage, but it comes at a price: organizational change is often required. In this article Roman Pichler looks at what it takes to succeed as a Product Owner.

Roman Pichler
on May 14, 2008
Book Excerpt and Interview: Effective Java, Second Edition

Effective Java, Second Edition by Joshua Bloch is an updated version of the classic first edition, which was the winner of a 2001 Jolt Award. This edition has been updated to discuss Java 6 language features including generics, enums, annotations, autoboxing, the for-each loop, varargs, and concurrency utilities. InfoQ asked Bloch several questions about the areas that the new edition covers.

Ryan Slobojan
on May 13, 2008
Tapestry for Nonbelievers

A new article by Igor Drobiazko and Renat Zubairov provides an introduction to version 5 of the Apache Tapestry component-oriented web framework. The tutorial shows readers how to create a component. It also covers Tapestry's IoC features and Ajax support that is provided through Prototype and script.aculo.us.

Renat Zubairov Igor Drobiazko
on May 10, 2008
Culture & Methods

Distributed Version Control Systems: A Not-So-Quick Guide Through

Since Linus Torvalds presentation at Google about git in May 2007, the adoption and interest for Distributed Version Control Systems has been constantly rising. We will introduce the concept of Distributed Version Control, see when to use it, why it can be better, and have a look at three actors in the area: git, Mercurial and Bazaar.

Sebastien Auvray
on May 07, 2008
Implementing Manual Activities in Windows Workflow

Windows workflow is an excellent framework for implementing business processes. One thing that is missing in it is direct support for human activities. Several approaches to solving this problem exist, but they are not generic enough for general usage. In this article we will define one of the approaches to a completely generic implementation of human activities in WF.

Boris Lublinsky
on May 05, 2008
Software Development Lessons Learned from Poker

There is no silver bullet. We know it, but don't act like it. Your language, tool or process is better, right? Jay Fields says: "It depends". The right choices varies with context, people, and more. This article touches upon how a lot of things must impact a choice; learning culture, skill levels, teamwork, incomplete information, metrics - and context.

Jay Fields
on Apr 26, 2008
InfoQ Interviews BPEL4People Representatives

In another "virtual panel session", we took the opportunity to talk with representatives of the new OASIS BPEL4People Technical Committee and get their feedback on just why we need this work. Apart from asking them what BPEL4People (and WS-HumanTask) are all about, we asked them how this relates to other BPMN efforts and what else we can expect in this area.

Mark Little
on Apr 24, 2008
Improvement, Success and Failure: Scrum Adoption in China

This recent inquiry, by InfoQ China editor Jacky Li, picked 5 very different cases of Scrum adoption in China, which got different results, and asked: Why did you use Scrum? How did you adopt it? What problems did you encounter, and why did it succeed or fail? Despite the small sample size, it's an interesting comparison, pointing out that improvement doesn't ensure success.

Jacky (Jian) Li translated by Jacky (Jian) Li
on Apr 16, 2008
Spectacular Scalability with Smart Service Contracts

Scalability isn't the Boolean value stateless design tends to assume. Udi’s team averts a second failure using service contracts to address multiple dimensions of scale.

Udi Dahan
on Apr 10, 2008
Development

Key Takeaway Points and Lessons Learned from QCon London 2008

This article presents the main takeway points as seen by the many attendees who blogged about QCon. Comments are organized by tracks and sessions: Keynotes, Architectures you've always wondered about, The Cloud as the New Middleware Platform, SOA, REST and the Web, Evolving Java, Banking, Agile in Practice, Programming Languages of Tomorrow, Effective Design, .NET, The Rise of Ruby.

Ryan Slobojan
on Apr 09, 2008