Stefan Arentz

I’ve always been fascinated by programming languages and I never really stopped to explore beyond the tools that I know well. So, somewhere last year I ordered a copy of Practical Common Lisp. Mostly out of curiousity and to learn a bit more about that strange language and understand where the hype that it is […]

Rant.
What do Python, Perl and Ruby all have in common? They all utterly suck at multithreading.
None of these scripting languages can take advantage of modern operating systems and the threading support they have. This might not have been important when these scripting languages were invented many years ago when a 386 was state of the […]

At Polar Rose we use Cacti to monitor all our servers and services. Cacti is a simple tool that makes nice graphs of things like disk space used, bandwidth utilization or system load.
I wanted to use Cacti to keep track of some Java applications like ActiveMQ. Using JMX you can inspect applications pretty easily and […]

We finally decided to open up a whole bunch of more pages that were previously behind a beta login. Sooo, here are some links as starting points:

Der Hoffmeister
The Dude - Love that movie. Amazing we detected the face with the crazy sunglasses.
My favorites
Some of my dear colleague’s favorites
A whole bunch of false positives - Also […]

Sometimes when you are in crazy situations you need to use crazy solutions.
Polar Rose is are a 95% Java shop. Basically everything is Java, from distributed image processing infrastructure to web sites and web services. (That five percent is some amazing C++ code to do the most difficult task of finding and analyzing faces.)
So, lately […]