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RAG不用向量数据库,用MySQL硬扛?暴力搜索的巨坑……
前段时间面某大厂的时候,面试官问我:“你们 RAG 系统的向量检索怎么做的?”,我说:“用 MySQL 存 Embedding,查询时遍历计算相似度。” 空气突然安静了五秒。我看到面试官的嘴角抽了一下,才意识到问题大了——当时我们知识库有 50 多万条 Chunk,每次查询 ...
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