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Multi-Tenant RAG Isolation (EXPLAINED)

Scenario BasedRAGHard25 min read

Hard RAG interview question on multi-tenant rag isolation — architecture, trade-offs, eval, and production patterns.

TL;DR — Quick Answer

Isolate via separate indexes, strict metadata filters, or dedicated namespaces per tenant. Encrypt at rest, audit cross-tenant queries, load-test filter enforcement — shared indexes with ACL tags are cheaper but higher misconfiguration risk.

The Interview Question

Explain multi-tenant rag isolation. How would you design, implement, and evaluate this in a production RAG system? Discuss trade-offs and failure modes.

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