Avoid having too many input and output devices on your workbench by using a virtual network computing server, and an accompanying viewer, and a Rasbperry Pi.
The ForkJoin pool was put into place to support parallel streams. Get a look at how the pool works and how the work-stealing algorithm help divide up tasks.
Take a look at how to marshal and unmarshal your Java objects and XML data with JAXB 2.0, a useful tool for generating XML schemas from Java code and vice-versa.
If you use a vSphere infrastructure, then vCheck can help. The vCheck framework is designed to run checks against your infrastructure to determine operational issues.
You can programmatically reconfigure a log manager via Spring and load your own log4j2.xml file from a defined path, forcing your Mule app to pick the file from any location.