What is Elasticsearch?

Elasticsearch is an amazing search engine tool that produces search results at lightning speed. It is built over Apache’s Lucene library. It has an HTTP web interface, and it offers full-text search engine capabilities. It is distributed, in that a document is split into parts or shards and stored in various nodes. It is also fault-tolerant, meaning it offers the user the option to create and store copies of the document they wish to store.

Elasticsearch stores documents in the form of JSON files, which are schema-free, similar to NoSQL systems. Elasticsearch, though written in Java, also offers a Python client library.

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