While you could technically use JSON to have a more efficient storage I think it safe to assume they use Key/Value. http://rethinkdb.com/docs/comparison-tables

While you could technically use JSON to have a more efficient storage I think it safe to assume they use Key/Value. http://rethinkdb.com/docs/comparison-tables/ http://rethinkdb.com/docs/comparison-tables/ I can't believe new databases are still using this model. Some of my data storage would be 90% keys and 10% data as JSON.