Apache CouchDB is a free and open-source NoSQL database solution. Apache CouchDB has a document-oriented NoSQL database architecture and is implemented in the concurrency-oriented language Erlang; Apache CouchDB uses JSON to store data with documents, it uses JavaScript as its query language using MapReduce, and it uses RESTful HTTP for its API. In this tutorial, we will show you how to install and set up Apache CouchDB on a VPS running Ubuntu 18.04.

Source: LXer – How to Install Apache CouchDB on Ubuntu 18.04