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Content Tagged with coldfusion + Java

I've been involved with software development for over 12 years now. Over that period I've been a developer, architect and a project manager in different software projects. So the following list of 10 things relating to software development (and the key issue of software defect reduction) made a lot of sense. 1.....

I've began building an internet services utility component for doing things like DNS lookup in ColdFusion. It's basically a wrapper to simplify all the JAVA integration calls.

After upgrading to the new Eclipse 3.4 Platform I am pretty excited about a couple new features. This one is more of a time saver for me and some may not care but I really like it. We have about 10 servers here that I do direct development on (no source control, I know...) and I need a good way to organize all of my projects. What I do is create working sets ....

I was looking for a way to programmatically refresh some specific folders in my workspace anytime I ran my ANT script. Eclipse provides several ant tasks that you can use for various purposes, once of which is the.....

Wanting some light reading for this evening, I decided to dig into the Closures for Java draft spec (homepage). Oh. My. God. I'm a huge fan of closures. They're elegant, simple, and easy to use. Their semantics are subtle, but not confusing. They allow for very concise implementation of otherwise complicated algorithms, trimming a vast number of "normal" control structures, particularly various looping constructs.

Christopher R contacted me through my contact form to ask about object composition. To reiterate, composition models a "has-a" relationship between objects, as opposed to an "is-a" relationship which is typically done through inheritance or interface implementation. However, Christopher seems to be working with two different kinds of objects here: Singletons and business objects. How you handle the composition can depend on the kind of object you are dealing with and what they are meant to do.

In an effort to resolve memory and performance problems with generating large CSV and tab delimited files in an application I wrote at Duke, I started hunting around for solutions.

If you use ColdFusion (or another Java-based CFML runtime), you should be using Java. There's a reason that CF uses Java under the hood: Java is incredibly powerful. Yes the interface to Java from the CF level is cumbersome and creating hybrid CF/Java applications pretty much costs you CF's RAD capabilities, but there are some real gems in the Java libraries.

Clustering in particular with ColdFusion and JRun can get fairly complicated pretty fast and I urge all who are going to embark on clustering to plan out how you want to cluster and why. Another key issue is to make sure when we are creating a web application that it designed and engineered from day one with clustering in mind. I have helped so many clients who hit major problems when they start building clusters, largely because the application was too tightly coupled to the environment it is running in. Hard-coded directory paths would be a classic example. In this blog posting I wanted to illustrate an interesting concept, well two in reality, Horizontal Clustering and Vertical Clustering. Let's look at a diagram....

There have been several blog posts recently about class-loading issues apparently linked the use of the Sun-Java 1.6 (6.0) JVM. Mark Mandel has a detailed article on this here. Before seeing this article we had been working on optimizing a ColdSpring-ModelGlue-Reactor application. We blogged our progress in this article. We thought a reality check was a good idea and ran some load tests comparing this same application performance in Java 1.5 and 1.6. Once again we observed better performance in 1.6; here are the results. These results are for a 50 Virtual User (vUser) Test for 1 hour with 8 second think time (delay between clicks) comparing Java 1 5 to 1.6. Firstly Java 1.5 Total Number of Clicks: 13,345 (0 Errors) Average Click Time of all URLs: 5,298 ms

I have added several blog postings here before on the theories of High-Availability (HA) and Clustering. In this series of blog postings I will be attempting to create dedicated postings for the following scenarios. Please keep in mind that there will be alternative ways to do these things and what I am showing here is drawn from my experiences from either creating clusters for clients or working on existing clusters Here are the scenarios I will be posting on... Setting up a two instance cluster from a fresh install of ColdFusion Load testing a two instance cluster on Java 1.6 (6.0) using the Round Robin algorithm Load testing a two instance cluster on Java 1.5 (6.0) using the Round Robin algorithm

Forget Ruby on Rails; in this article I outline why, as a Java developer, you should perhaps be looking to another technology closer to home to leverage your existing in-house skills and infrastructure. We'll briefly touch on some of the features of ColdFusion, the Java-EE-based application server from Adobe, and discuss why ColdFusion is more relevant today for Java developers than it has ever been.............

Mike Brunt, of Alagad, discusses how he tuned an application by working with the myriad of JVM settings. Examples complete with charts and config settings.

Paul Marcotte shares some thoughts on logical OO structures. Are you a victim on the 5+1 Object Model anti-pattern? Read why not every business object needs a service or a DAO.

Many companies are successful in meeting the rapidly changing needs of business by putting ColdFusion on top of their Java based Infrastructure. I am working on gathering material for a special technology piece highlighting the benefits of using ColdFusion in this way. If you are using ColdFusion to leverage existing Java subsystems, I would like to interview you.