Elasticsearch is a NoSQL database search engine based on Apache Lucene. It is an open-source product developed in Java. Similar to MySQL and other databases, it is also used to store the data. Elasticsearch stores unstructured data in the document format. It offers an NRT (Near Real-Time Search) facility as well as allows to perform full-text search on data.
Elasticsearch is easy to deploy and manage. Even users can take the backup of data from Elasticsearch very easily and efficiently by setting up a few settings and executing queries.
