Will MongoDB and Couchbase be productive?

Question

Scala

MongoDB has an asynchronous and non-blocking Scala driver ( reactivemongo.org ). Couchbase also pleases with its reactive driver ( reactivecouchbase.org ). Both use JSON as their document format.
I'm interested in the pros/cons of this approach:
MongoDB is the main storage;
Couchbase - cache.
Thanks in advance for your reply!

Answer 1

I would recommend only mongodb or, if you really want to complicate your life, then simple redis / memcache. Firstly, couchdb is a rather specific storage for its range of tasks, only if you really need couch features (two-way replication, for example). Secondly, if you need to cache mongodb, you may not have the right storage design. Since for any nosql storage, the data structure must also take into account how this data is then read in an optimal way.