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Concept BuildPostgreSQL RLSTurborepoEdge RoutingMulti-tenant

Multi-Tenant SaaS Architecture

A multi-tenant framework reference build on row-level security database isolation.

Isolation Policy

Strict RLS

Target Edge Latency

<50ms

Setup Overhead

Zero

The Problem

Building a SaaS application requires solid tenant isolation. If a tenant's database queries leak into another tenant's workspace, it is a catastrophic security failure. We built a concept project demonstrating absolute data isolation using a single database.

The Approach

We implemented PostgreSQL Row Level Security (RLS) policies at the database layer. By defining a global tenant_id session variable, all select, update, and insert operations are filtered at the database engine level. The Next.js application acts as a thin proxy, setting the current tenant context upon request headers.

The Outcome

Designed as a multi-tenant reference architecture using database-level security policies to enforce explicit tenant isolation across all query execution paths.

Key Learnings

PostgreSQL session variables require transaction connection pooling instead of session connection pooling, meaning connection management must be handled carefully to avoid scale bottlenecks.

Build Details

Technologies Used

Next.jsPostgreSQL RLSDrizzle KitTurborepoEdge Cache

Quality Assurances

  • WCAG 2.2 AA Accessible
  • Input Sanitization Checked
  • Decoupled architecture ready

Interested in a similar build?

We can help you architect and build high-performance platforms, SaaS frameworks, or modern marketing frontends.