Today I can make an exciting news. Alexey Andreev is the author of a Java-bytecode to Javascript compiler called TeaVM. You may know GWT or Scala.js but TeaVM does not compile the sources, it compiles the bytecode to JavaScript so you cannot only use Java as the source language. Of course other advantages exists. Now […]

Today the new Java Magazine from Oracle was published. You’ll need to register to view it or download one of the apps (Android, iOS). In this latest magazine my article about GraphHopper was published. It is about how I solved some big (data) problems in Java as well as some OpenStreetMap things to know and […]

GraphHopper is a fast and Open Source routing engine written in Java. The sources are at Github and you can try it online. Some months ago Java itself was ported to Raspberry Pi (ARM) and the latest versions even have the JDK from Oracle preinstalled. So there is no reason to not trying GraphHopper on […]

Update: No need to install and maintain GraphHopper on your own expensive hardware. Sign up to the GraphHopper Directions API for business which makes it very easy, cost effective and reliable to consume GraphHopper routes with always up-to-date software and OpenStreetMap data. On Monday we released version 0.2 of GraphHopper an Open Source road routing […]

Today we’re releasing version 0.2 of our Open Source road routing engine GraphHopper written in 100% Java. Faster! All algorithms are faster due to bug fixes and fine tuning A preparation is necessary for our optional speed-up technique called Contraction Hierarchy. This preparation is also faster. Further! We finally fixed GPS-exact routing so you don’t have […]

Today we’re proud to announce the first stable release of GraphHopper! After over a year of busy development we finally reached version 0.1! GraphHopper is a fast and Open Source road routing engine written in Java based on OpenStreetMap data. It handles the full planet on a 15GB server but is also scales down and […]