In some ways, Riak is downright mundane in its role as the easiest NoSQL database to operate. Want more servers? Add them. A network cable is cut at 2am? Deal with it after a few more hours of sleep. Understanding this integral part of your application stack is still important, however, despite Riak's reliability.
We've covered the core concepts of Riak, and I've provided a taste of how to use it, but there is more to the database than that. There are details you should know if you plan on operating a Riak cluster of your own.