Safer Cyling – using car accident data to find safe routes in Koblenz

This blog post will contain a description of the routing algorithm that was implemented on the 23.11. – 25.11.2018 on the debeka hackquarter to find safer cycling routes in Koblenz. It uses Java EE (wildfly), PostgreSQL and pgRouting for the backend. The frontend was implemented using mapbox JS GL. The source can be found on github. The whole coding took around 8 hours for 2 persons. During the presentation the following summary was visualized:


Visualizing my trips from Google Maps with

In this blog post I will post a visualization of my trips between 2015 and 2018 mainly in germany. Further it contains the Java code that I used to convert the proprietary JSON format used by the google maps timeline for locations logs into a csv file.

Visualizing farmland property prices in germany based on 2016 sales with

In this blog post I will tell a small data story about farmland prices based on data of 2016. The data is mainly given by Statisches Bundesamt and Bundesanstalt für Geowissenschaften und Rohstoffe and the visualizations are made with the awesome open source library created by Shan He and her data visualization team at Uber.


Series business value 2: Example business application with microservices

In this blog post I will describe an example application that is based on the ideas given in the blog post Business value driven architecture with microservices. You can see that it is technical but it also includes some simple ideas that make software engineering a lot easier and a lot more usable for the end Read more about Series business value 2: Example business application with microservices[…]

Java EE Module System

In this blog post I will explain a little bit about the technology that I used to create a pure Java EE 7 module system based on a Wildfly 10 application server. In the image above you can see the details. Design Goals What are the design goals of the system? Java based Standard based Read more about Java EE Module System[…]

10 Reasons why JavaScript is better than Java

In this blog post I will give 10 reasons why JavaScript is better than Java. 1. Duck typing JavaScript is a dynamically typed languages that makes it easily possible to create mock objects or exchange implementation without the hassle of interfaces. Compared to Java or C# it is a lot easier to write code that Read more about 10 Reasons why JavaScript is better than Java[…]