HNSW Algorithm Deep Dive

Master HNSW (Hierarchical Navigable Small World) — the dominant ANN index in modern vector DBs. Learn the layer structure, M and efConstruction, and tuning for your workload.

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6

Lessons

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Code Examples

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Lessons in This Topic

Work through these 6 lessons in order, or jump to whichever topic you need most.

HNSW Intuition

Intermediate

Layer Structure

Advanced

The M Parameter

Intermediate

efConstruction and efSearch

Advanced

HNSW Memory Footprint

Intermediate

Tuning HNSW for Your Workload

Advanced