In Part 1 of this series, we looked at MongoDB, one of the most reliable and robust document-oriented NoSQL databases. Here in Part 2, we'll examine another quite unavoidable NoSQL database: Elasticsearch.
More than just a popular and powerful open-source distributed NoSQL database, Elasticsearch is first of all a search and analytics engine. It is built on the top of Apache Lucene, the most famous search engine Java library, and is able to perform real-time search and analysis operations on structured and unstructured data. It is designed to handle efficiently large amounts of data.