Distributed search engine with vector support alongside full-text search.
这两项技术尚未记录可对比的属性。
由上述差异按固定规则生成，不是模型生成的。
Choose Elasticsearch if…
已记录的属性中，没有任何一项显示它更有优势。
Choose OpenSearch if…
已记录的属性中，没有任何一项显示它更有优势。
页面保持可访问，但在积累足够的带来源细节之前不纳入搜索索引（PRD SEO-08）。
database · Search Engines
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.
database · Search Engines
OpenSearch is the Apache-licensed fork of Elasticsearch, offering the same combination of text and vector search. It solves the licensing problem that made some organisations unable to use the original. It exists because the governance of a search engine matters to the people who have to run it for a decade, and the fork diverged enough to be its own project rather than a copy.
