Using the CouchDB river

CouchDB is a NoSQL data store that stores data in the JSON format, similar to ElasticSearch. It can query with map/reduce tasks and it's RESTful, so every operation can be done via HTTP API calls.

Using ElasticSearch to search the CouchDB data is very handy as it extends CouchDB data store with Lucene search capabilities.

Getting ready

You need a working ElasticSearch cluster and a working CouchDB Server to connect to.

How to do it...

For using the CouchDB river, we need to perform the following steps:

1. Firstly, we need to install the CouchDB river plugin, which is available on GitHub and maintained by the ElasticSearch company. We can install the river plugin in the following way:

   bin/plugin -install elasticsearch/elasticsearch-river-couchdb/1.2.0

   Tip

   The CouchDB river plugin uses the attachment plugin and sometimes JavaScript scripting language, it is good practice to install them.

2. After restarting the node, we are able to create a configuration (config.json) for our...