You can find source code on github.com.
Polyglot persistence application
At various conferences, I have given a talk about polyglot persistence (Slides: JavaOne 2012, DevNexus 2013), that describes how to use SQL and NoSQL (specifically Redis) databases together. You can find the example code on github.com.
Cloud Services example: VoteMeetEat.com
At various conferences, I have given a talk about developing applications with cloud services such as factual.com and twilio.com (Slides: JavaOne 2012, DevNexus 2013). You can find the example code on github.com.
plain old objects 
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your presentation was very good & detailed, wanted access to the slides given at SV code camp
Cyril
Glad you liked the presentation. The slides are here: http://www.slideshare.net/chris.e.richardson/