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The Company Behind Cursor's Vector Search Just Killed the Vector-First Database

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Last month I watched a teammate spend two days migrating 4 million embeddings from Postgres into a dedicated vector database because a benchmark blog post scared him. The migration added a second database, a sync job, and a new failure mode. His queries got 30 ms faster. Nobody using the product noticed. I thought about him when I read turbopuffer's September 30 post, RIP, vector database.

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