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PostgreSQL Vector Search with pgvector: From Embeddings to Enterprise Scale

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PostgreSQL Vector Search with pgvector: From Embeddings to Enterprise Scale is a practical, end-to-end guide to building production-ready vector search on Postgres. You’ll learn how to model embeddings, create and tune ANN indexes, write hybrid ranking queries, operate RAG pipelines, and run at scale with observability, high availability, and row-level security—all with reversible rollouts and evidence-driven evaluation. Key features -Clear explanations of embeddings, similarity metrics, and normalization that map cleanly to SQL -Schemas that carry lineage (model, version, metric) and support parallel cutovers -Hands-on indexing with IVFFlat and HNSW, including probes/ef_search tuning and recall trade-offs -Hybrid search that blends vectors with full-text and metadata filters for precise, explainable results -RAG patterns: chunking, candidate generation, reranking, prompt assembly, and safe citation -Operational playbooks for embedding refresh, drift handling, and background backfills that won’t spike latency -Observability: EXPLAIN (ANALYZE), pg_stat views, stage-level timing, and recall@n dashboards -HA and replication guidance, WAL planning for large index builds, and failover that keeps p95 predictable -Security and compliance with TLS, SCRAM, row-level security, and security-definer search interfaces -Roadmaps for multimodal vectors, quantization, learned hybrid ranking, and cross-shard top-k merging Target Audience This book is for backend engineers, data engineers, DBAs, and ML practitioners who want semantic search that’s reliable in production—not just in a demo. You should be comfortable with SQL and basic PostgreSQL operations. No deep math background is required; all vector concepts are taught with practical examples and ready-to-use queries. Bring semantic search to where your data—and your governance—already live. Use this book to ship a fast, explainable, and secure vector system on Postgres, then scale it with confidence. Open to the first chapter, run the sample queries, and make your next release the one that upgrades your search from keyword to intelligence.

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PostgreSQL Vector Search with pgvector: From Embeddings to Enterprise Scale

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