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Architect · System Design

Multi-Tenant Isolation Strategy

Chose a single-database, tenant-scoped model with a clean path to database-per-tenant for large or regulated customers.

Context: a SaaS serving many companies needed strict data separation without exploding operational cost. Decision: a shared database with enforced tenant scoping (global scopes + row-level guards), promoting heavy or regulated tenants to isolated databases when justified. Trade-off: a little more app-layer discipline in exchange for far simpler ops, cheaper infra, and easy cross-tenant analytics.

LaravelMySQLGlobal ScopesRBAC

What it does

  • Tenant scoping enforced at the ORM layer so no query can leak across tenants.
  • Hybrid model — shared DB by default, dedicated DB for large / regulated tenants.
  • Per-tenant feature flags, usage limits and billing.
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Multi-Tenant Isolation Strategy | Codigeni