Vector Index Tuning Guide to optimizing vector indexes for production performance. When to Use This Skill - Tuning HNSW parameters - Implementing quantization - Optimizing memory usage - Reducing search latency - Balancing recall vs speed - Scaling to billions of vectors Core Concepts 1. Index Type Selection 2. HNSW Parameters | Parameter | Default | Effect | |-----------|---------|--------| | M | 16 | Connections per node, ↑ = better recall, more memory | | efConstruction | 100 | Build quality, ↑ = better index, slower build | | efSearch | 50 | Search quality, ↑ = better recall, slower searc…