Category: featured

  • Putting the domain to work

    Putting the domain to work

    In this post I create a way to import transactions and categorize them. Basically putting the earlier created domain to work. In the end I get some insight into my spendings, however not completely done yet. The resulting code can be found at GitHub.

  • 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 […]

  • quick update

    quick update

    A long overdue update from my side. As mentioned in previous post I got married last year. Next to that this year we welcomed a newborn daughter. So my life changed a lot the last 12 months. Update on my path to financial independence We saved a bit less than the goal (25%) of last […]

  • 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.