Changing The Way We Use JPA

I’ve been updating some training materials recently, and thinking about better ways of teaching and talking about JPA. One of…

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Reduce Repetitive Code in Spring MVC Controllers

After spending some time doing sustained engineering (a.k.a. maintaining legacy code), I ventured to reduce repetitive code in Spring MVC…

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Spring with Rails’ jQuery UJS

I’ve always wanted to try to see if I could use Rails’ jQuery UJS in a Spring Boot project. The…

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Revisions and Immutability

Here’s a brief post. I’m not sure how to start it. It’s one of those “why didn’t I think of…

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Caching in Spring Boot with Spring Security

In this post, I’d like to share a lesson learned by one of the teams at O&B. They were using…

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Dealing with Domain Objects in Spring MVC

I was recently surprised by how one code base had public default constructors (i.e. zero-arguments constructors) in all their domain…

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JasperReports: The Tricky Parts

If you have been programming in Java long enough, chances are you needed to generate reports for business users. In…

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DataSource Routing with Spring @Transactional

I was inspired by Carl Papa’s use of aspects with the Spring Framework to determine the DataSource to use (either…

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Apache Spark RDD and Java Streams

A few months ago, I was fortunate enough to participate in a few PoCs (proof-of-concepts) that used Apache Spark. There,…

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