"Hey, how's that ultra-small, ultra-quiet, ultra-low-power app server going?" I don't hear you ask.
Awesome, thanks for not asking!
root@netvista1 # uptime 20:12:01 up 166 days, 3:11, load average: 0.10, 0.03, 0.02 root@netvista1 #
Yep, that little black box has been a great success. Any effect on the household electricity bill has been negligible, and it's been a fantastic platform to host public-facing (if untrafficked) Java experiments.
I'm in the process of bringing up netvista2, emphatically not as a load-balanced production server but rather as a public-facing "staging" server so I can begin A/B production environment switching as part of a Continuous Delivery approach.
Something else I want to look at is using Java SE for Embedded to give a bit more RAM space for webapps. Stay tuned.