CouchDB is one of the relatively smaller NoSQL options that are flying around at the moment, but that doesn't mean it doesn't pack a punch when used to solve the right problems.In this talk we'll look at the areas where CouchDB excels, and examine some of the mechanisms it uses to make this possible. In addition, we'll take a quick walk through a real deployment of a CouchDB network, backing a large multi-site private-cloud web service with millions of users, and look at some of the benefits and problems CouchDB can bring practically, in this scenario and others.