Episode Details

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Learn when to use HNSW, IVFFlat, StreamingDiskANN, and BM25 in Postgres. A practical guide to scaling vector search without guesswork.
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Vector search in Postgres isn't about choosing the best ANN algorithm—it's about choosing the right index for your constraints. This guide explains when to use exact search, HNSW, IVFFlat, StreamingDiskANN, and BM25-based hybrid search based on memory, recall, write volume, and filter selectivity. Learn how pgvector, pgvectorscale, and pg_textsearch fit together as workloads scale.