Couchbase is capable enough of storing key-values as well as credentials. Thus, it can store data like binary data, JSON documents, and many more.Couchbase server makes use of a binary Memcached protocol to perform the high-end functionalities as well as REST API’s SQL in order to view the queries.
Apache CouchDB, on the contrary, is capable of storing JSON documents. It also provides facilities to attach non-JSON files to the JSON documents.
