Blog · SaaS

Postgres schema patterns for multi-tenant SaaS

Published 2026-01-28 · 9 min read

Row-level security vs schema-per-tenant vs hybrid models—trade-offs for isolation, migrations, and query performance.

Models

Isolation requirements, compliance, and query patterns drive the model. RLS can be powerful but demands careful testing and indexing discipline.

Schema-per-tenant increases operational overhead but can simplify certain compliance stories.

Migrations

Tenant-aware migrations must be backwards compatible and observable; treat migration failures as incidents.

Choosing

Start with the simplest model that meets constraints—complexity is a liability unless it buys measurable safety.

Frequently asked questions

Do we need dedicated DB per tenant?
Rarely at early stage; revisit when compliance or noisy-neighbor risk demands it.

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