Elasticsearch

Elasticsearch is a distributed search and analytics engine built on Apache Lucene. It is the heart of the ELK Stack (Elastic, Logstash, Kibana) and a leading Vector Database for AI.

When to Use

• Full-Text Search: "Did you mean?" suggestions, fuzzy search, relevance scoring.
• Log Analytics: Storing terabytes of logs (Observability).
• Vector Search (2025): Storing embeddings for Semantic Search / RAG.

Quick Start