Elasticsearch
On this page
Elastic NV Lucene distributed search engine.
Definition
Elasticsearch 8.x integrates vector search (HNSW), kNN search, semantic search via embeddings models. ELK stack: Elasticsearch (storage/search), Logstash (ingestion), Kibana (UI), Beats (agents). Licence changed 2021 to SSPL/Elastic License v2 (after AWS forking → OpenSearch). Availability: Self-managed, Elastic Cloud (SaaS), Elastic on Kubernetes (ECK).
Origin
Elasticsearch v0.4 published February 2010 by Shay Banon ; Elastic NV founded 2012 ; NYSE IPO 5 October 2018.
Example in context
Wikipedia uses Elasticsearch 8.x to index ~60M articles ; full-text and lookahead UI search delivered in under 100ms.
Related terms
- OpenSearch — AWS fork.