{"avoid_when":"超大规模向量检索要专用引擎（Milvus/Qdrant 等）","content_hash":"27ed1d7d375d65a9e5b4e85a9fd8292b63a6f8c40d4ab28ad41553769e25e53e","domain":"databases","evidence_urls":["https://github.com/pgvector/pgvector"],"id":"pgvector","language":"C","license":"PostgreSQL","name":"pgvector","niche":"postgres vector","repo":"https://github.com/pgvector/pgvector","source_updated_at":"2026-07-21T20:32:39Z","status":"active","summary":"PostgreSQL 向量相似度检索扩展，适合把向量检索留在库内。","tags":["rag","vector-db"],"use_when":"已有 Postgres、向量量级中等、想少引入独立向量库","verification_status":"verified","verified_at":"2026-07-21T20:32:39Z"}