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Build Multi-Tenant RAG in Next.js Without Leaking Customer Data

A practical pattern for tenant-scoped retrieval with PostgreSQL, pgvector, row-level security, and integration tests. I've spent about twenty years building software. A pattern worth watching for is a security check that exists in the first request path but gets missed when someone adds a second on…

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  1. 2026-11-01 12:25 · DEV Community — AI
    Build Multi-Tenant RAG in Next.js Without Leaking Customer Data

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