Elasticsearch

Overview

Elasticsearch is a distributed search engine whose primary model is inverted-index text search, with vector search added alongside it. It solves the practical problem that most search is still keyword search, and a system that only does embeddings loses the exact-match behaviour users expect for names and codes. It exists because hybrid retrieval usually beats either approach alone, and running both in one engine avoids synchronising two.

Technology Graph

How Elasticsearch connects to the rest of the stack.

Alternatives

• OpenSearch database

  An alternative to Elasticsearch · source

Comparisons

Side-by-side breakdowns with the alternatives above.

• Elasticsearch vs OpenSearch