Which is better to use CouchDB or CouchBase?

Question

NoSQL

Is there anyone here who has used these databases in production? What's better? I read about the division of projects, but it is not clear who is ahead now and what base to choose for the project. The main need is a multimaster to synchronize servers in different DCs. It is there and there (that's why we discarded monga, although there is already a pleasant experience in using it). But on the chips ... In general, will anyone share their experience?