Spring MVC REST controller says 406 when emails are part URL path

You've got this Spring @RestController and mapped a URL that contains an email as part of the URL path. You cunningly worked around the dot truncation issue [1] and you are ready to roll. And suddenly, on some URLs, Spring will return a 406 [2] which says that the browser requested a certain content type … Continue reading Spring MVC REST controller says 406 when emails are part URL path →

Building a private cloud with Docker

Abstract: In this post I'll describe how to create a private cloud with Docker, Varnish and a lot of shell scripting on a set of private (virtual) servers. This post assumes intermediate knowledge of related techniques. I will still once in a while go into setup details because, well, this is also an exercise for … Continue reading Building a private cloud with Docker →

Tomcat starts slowly in docker container

Just a little reminder to self: when running Tomcat with Java 8 in an Ubuntu Docker container, Tomcat will take a very long time (minutes!) to start with even the simplest web application. The issue is actually documented (not entirely Docker-related). The solution is to modify JAVA_OPTS to use a different random device: JAVA_OPTS=-Djava.security.egd=file:/dev/urandom

Ubuntu on the Acer Aspire E15 (E5-571G-51TH)

Having failed the 3rd repair attempt at the Thinkpad E540 [1] I gave up and bought the next best laptop from the nearby store that somehow is usable for programming. Behold: the Acter Inspire E15. 8GB RAM, i5, matte screen (1920x1080). It worked out of the box with the SSD transplant from the old Lenovo, … Continue reading Ubuntu on the Acer Aspire E15 (E5-571G-51TH) →