Couchbase, the provider of a complete NoSQL database, has raised $60 million in Series E funding. The round was led by two new investors, WestSummit and Accel Growth Fund, and brings the total amount of Couchbase funding to about $115 million. All existing venture capital investors also participated in the round. Couchbase's flagship product, Couchbase Server, is architected to consolidate multiple layers of functionality, delivering the simplicity of a key value database, the flexibility of a document database and the read speed of an in-memory database. The company last raised $25 million of Series D funding at a $198 million valuation in August 2013. It will use the new funds for continued product investments, expanded regional technical support operations and scaling its marketing and sales teams.