Today I did my session, about Reactive streams at Social Connections 14 in the very sunny Berlin.
Slides of the session
Reactive Streams Starter
For this session I created a starter project, which will give you a kick start if you want to try it your self.
In the ReadMe is more information about the things you need, like MongoDb locally or remote.
BTW in the repository is also a frontend project, build with Angular, which interacts with the API.
The Repository is on Bitbucket