Self-hosted Postgres vs managed ANN — scale, cost, filtering, and tenancy trade-offs.
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pgvector vs Pinecone vs Qdrant: how do you choose a vector DB in 2025?
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01
Understand the problem
vectordbpgvector
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Attempt it yourself
Sketch your approach before reading the solution — that's what interviews test.
Nudge consolestandby
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03
Study the solution
pgvector for <5M vectors + strong OLTP needs; Pinecone/Qdrant for >10M, heavy filtering, and serverless scale. Do not pick on hype — measure QPS, filter selectivity, and tenancy.
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