What Is Elasticsearch?
Elasticsearch is a distributed, open-source search and analytics engine built atop the Apache Lucene library. Elasticsearch also offers vector search and retrieval augmented generation (RAG), supporting modern AI applications seamlessly. Applications can store structured and unstructured data in Elasticsearch, with or without a defined schema, by sending JSON payloads to an Elasticsearch cluster.
Elasticsearch Architecture
From the ground up, the main components of an Elasticsearch cluster are: