Apache's CouchDB is a distributed, fault-tolerant and schema-free document-oriented database accessible via a RESTful HTTP/JSON API.

Basics

CouchDB is a document-based database server, accessible via a RESTful JSON API using the Javascript language as a query interface. CouchDB is a non-relational, non object-oriented database, which stands against one of Rails' basic conventions: the ORM data structure. CouchDB does not come to replace ActiveRecord or any other relational data structure laye…