Milan Jovanović • 9/12/2026

Let Postgres Enforce Tenant Isolation

A technical guide on enforcing tenant isolation in multi-tenant applications using PostgreSQL row-level security (RLS) alongside EF Core query filters. It covers setting up RLS policies, using a dedicated non-owner database role, setting tenant context per connection, and testing with 1M invoices across 50 tenants. Includes code examples and best practices for defense-in-depth tenant security.

0 comments

#postgresql #Multi Tenancy #Ef Core