Category: Software Development

  • Continuing Domain Driven Design

    Continuing Domain Driven Design

    tl;dr In this post I continue my progress towards an DDD version of my favorite pet project. In this iteration I add a way to check the budget against the real expenses. The code is on GitHub and the picture contains the new model. Continuing Domain-Driven Design In my previous blog post I started to […]

  • Applying Domain-Driven Design

    Applying Domain-Driven Design

    tl;dr In this post I apply Domain-Driven Design to my favorite pet project. The picture above contains the resulting model. The resulting code can be found at GitHub. My attempt on Domain-Driven design As mentioned in my previous post I need to learn Domain-Driven Design for my new job. In this post I apply the […]

  • Learning domain-driven design

    Learning domain-driven design

    On my new job the department is applying Domain-Driven Design. I did read Domain-Driven Design – Tackling Complexity in the Heart of Software by Eric Evans a couple of years back. However as I never used it I need to learn how to apply it. So in order to really learn DDD I started to […]

  • Naive Bayesian Classifier on transactions

    Naive Bayesian Classifier on transactions

    For a long time I have the idea to enhance my BudgetApp application with machine learning techniques. After trying a implementation of the K-nearest-neighbor algorithm. I finally use a bayesian classifier implementation which works quite well.

  • Leaky abstractions in JPA eclipselink

    In our team we use JPA, EclipseLink to be precise. Now we start stress testing we notice something weird. The child relations of a entity are not updated if we only save the child. Probably we can prevent it by some configuration/annotation or other way, but we use an ORM to make sure we don’t have to think about these things.