Play20 — pull request #1071 by nremond (2013-04-28 09:32:25+00:00)
Title: Thread safe use of java.util.SimpleDateFormat

When playing with [Gatling](www.gatling-tool.org), a load testing tool, I often choose the Computer-Database sample application as a victim. When massively sending POST requests to create new computers in the application, I randomly face some 400 errors.

As described in the [Oracle Javadoc](http://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html), SimpleDateFormat is not threadsafe.
This is the root of my random errors.

Nicolas