Elasticsearch

Elasticsearch is a full text search engine that can be used as a NoSQL database and as an analytics engine. It is easy to scale, schemaless, and near real time, and provides a restful interface for different operations. It is schemaless, and it uses inverted indexes for data storage. There are different language clients available for Elasticsearch, as follows:

• Java
• PHP
• Perl
• Python
• .NET
• Ruby
• JavaScript
• Groovy

The basic components of Elasticsearch are as follows:

• Cluster
• Node
• Index
• Type
• Document
• Shard