Elasticsearch is a full text-based search and analytics engine. It is a highly scalable and distributed system, specifically designed to work efficiently and quickly with big data systems, where one of its main use cases is log analysis. It is capable of performing advanced and complex searches, and almost real-time processing for advanced analytics and operational intelligence.

Elasticsearch is written in Java and is based on Apache Lucene. It was first released in 2010 and it immediately gained popularity because of its flexible data structure, scalable architecture, and very fast response time. Elasticsearch is based on a JSON document with a schema-free structure, making adoption easy and hassle-free. It is one of the top ranking search engines of enterprise grade. You can write its client in any programming language; Elasticsearch officially works...