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Delivering Java Apps on Fedora Core

Fedora Core 4 was the first release to include a a lot of code written in Java. gcj aims to implement a complete system, compatible with Java, centered around an ahead-of-time compiler. It has a cleanroom class library based on GNU Classpath, and a built-in interpreter. The compiler can compile Java source files, class files, or even entire jar files to object code.

Tom Tromey
on Jun 26, 2006
The HandleExternalEvent Activity in Windows Workflow

Scott Allen walks through the implementation of a HandleExternal Event Activity in Windows Workflow Foundation that is used to handle events raised by the process that is hosting the workflow runtime.

Scott Allen
on Jun 22, 2006
Real-World Rule Engines

For many developers, rule engines are buzzwords, or black boxes on an architectural diagram: something to be feared or admired from afar, but not understood. In this article, Geoffrey Wiseman shares his practical experience with rule engines and with Drools in particular to support in-market solutions for financial services.

Geoffrey Wiseman
on Jun 19, 2006
A Look at Common Performance Problems in Rails

Rails performance expert Dr. Stefan Kaes takes a look at the most common performance issues in your Rails applications and what to do about them. Advice is given regarding benchmarking, choosing a session container, caching results of expensive computations, optimizing database queries and working effectively with view helpers.

Stefan Kaes
on Jun 13, 2006
Dealing with Legacy Code

Here's a three-pronged attack to use on the legacy code that everyone eventually inherits: Build, Automate, Test. Use this BAT to create a safety net to ensure your code continues to work the way you want it to. Richardson shows how this helps quickly identify and eliminate unintended side effects. See how your day-to-day work compares, and see if you need to approach your work differently.

Jared Richardson
on Jun 12, 2006
Evolutionary integration with ESBs

ESB Programming experts provide simple working examples and clearly communicated ideas and patterns using the open source Mule ESB tool set. These examples provide both working code as well as suggest a methodology of evolutionary integration which can be used to dramatically simplify and accelerate SOA integration.

Kjetil Paulsen Rune Schumann
on Jun 01, 2006
Agile Asset Management with Ruby DSLs

Ruby makes it easy to craft Domain-Specific-Languages with Ruby syntax. This article is a story about the benefits derived from implementing a Ruby DSL for a PLANET ARGON development project.

Jeremy Voorhis
on May 22, 2006
Casestudy: Brasilian National Healthcare System

This casestudy takes a detailed look at the implementation and architecture behind the Brasilian National Healthcare System, a 2M line of code, truly mission critical Java application. Lessons learned, best practices, and details down to the interaction diagram are covered

Fabiane Nardon Floyd Marinescu
on May 12, 2006
Simple JAVA and .NET SOA interoperability

.NET and Java interop can be made really simple using a REST documentcentric approach. This article compares a REST and SOAP approach to interop as well as the advantages of using HTTP POST vs. GET for REST invocations.

ThoughtWorks Inc Paul Hammant Ian Cartwright
on May 12, 2006
Ruby and Rails: In your face... but out of your way

Ruby on Rails is in many ways a system in itself. But in many, many other ways, Rails exposes, explores, and exploits its connections to Ruby, rather than hiding or disguising them. David A. Black, author of the book Ruby for Rails from Manning, shares his thoughts on whether or not Rails developers should take the time to master Ruby.

David A. Black
on May 11, 2006
.Net Exceptions - Tracking Down Where In The Code The Exceptions Occurred

Tess Ferrnandez, an escalation engineer in PSS (product support services) at Microsoft, outlines the procedure for tracking down where in your code an exception occurred by using a stack dump.

Tess Ferrnandez
on May 10, 2006