I was messing around with some of the settings in the Java 8 VM. I have been playing around with Spring Boot lately. So I have a minimal webapp in Spring boot, that has a couple of entities, and services and controllers. I have it configured to run as a standalone jar with an embedded tomcat 8 server. When I do a java -server -jar myapp.jar Spring boot launches my app and when it finishes loading the java process is sitting at 870,160K of memory.

Here I am again messing around with wordpress.  Why?  Well I have been sitting on my domain name forever and not doing anything with it so it is one way to extract some value from it.  Another thing I was considering was that as I have moved up in my software career I find myself more and more in the role of mentoring newer developers and I feel like I can solidify the things I am learning myself by documenting some of the things I have come across.  It also allows me to ramble on about anything I want and who doesn’t like that?  So anyway I have decided to give this a go, we shall see if I stick with it, but here goes nothing…

Earlier this year Spring Framework 4.1 was released. I was excited to try out the new features in our project at work and having previously upgraded us from Spring 3.1 to Spring 3.2 and from Spring 3.2 to Spring 4.0 I was expecting this to be another routine Spring update, but alas that was not to be.

One of the first things I do when looking to do a major version upgrade is to check all the dependency versions for the libraries to make sure all of our libraries are new enough to do the upgrade. In this case I discovered that Spring 4.1 requires Jackson 2.x and we were running Jackson 1.9.x.