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Grails: Applying build information to your builds

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Occasionally, when I buy some food I check the label to see how unhealthy it is in an effort to remind myself to eat better. I probably should do this more often but that’s another story. With software, I take a more strict approach. I like to know exactly what version of what I am using and if it pertains ...

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Introduction to Java lambdas

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The main theme of Java 8 is lambdas. I have noticed that for many Java programmers lambdas are pretty tough material. So let’s try to get a basic understanding of them. First of all, what exactly is a lambda? A lambda is an anonymous function that is, unlike a regular function, not bound to an identifier (i.e. it has no ...

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Configure Your OSGi Services with Apache Felix File Install

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A recent post about Managed Services reminded me of a feature in Apache Felix File Install that I found worth mentioning. While working on a project with Holger, I learned from him that File Install cannot only be used to manage bundles. It also monitors configuration files and updates Managed Services when their respective configuration changes. File Install can also ...

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Running out of memory without the OutOfMemoryError

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This is actually a reincarnation of a post originally posted in ~2010. The flashback occurred when listening to our engineers cursing at a particularly nasty bug raising its head yesterday. When the cursing stopped, I stepped by to verify my doubts. Lo and behold, I was correct – the mood swing was caused by an app running out of the ...

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Making Devops work outside of Webops

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I’ve spent the last 3 years or so learning more about devops. I went to Velocity and Devopsdays and a bunch of other conferences that included devops stuff (like the last couple of OWASP USA conferences and this year’s Agile conference). I’ve been following the devops forums and news and reading devops books and trying out devops tools and Continuous ...

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Setting up your application server with maven

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In many cases there is no way to deploy an application without the need to setup your application before. In JBoss AS 7.x you may want to configure for example your database connection. Or you have to configure a security realm. Maybe you also want to adjust the SLSB pool… In any of these cases all developers in the team ...

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