Multi-Tenant SaaS Architecture for a B2B Marketplace Platform
Client: Product Build — Onest Tech LLC · Industry: E-commerce / SaaS · Role: Lead Architect & Tech Lead · Duration: 4 months
The Challenge
Building a multi-tenant B2B marketplace where enterprise clients required contractual data isolation (GDPR data residency). A shared-schema approach was ruled out early. The challenge was designing a database-per-tenant architecture that could scale to 200+ tenants while keeping migration orchestration and connection pooling manageable.
The Solution
Implemented database-per-tenant using stancl/tenancy v3 in Laravel. Built a custom migration orchestration command that runs tenant migrations in batches of 20 with retry logic and Slack failure alerts. Configured lazy database connections with a 30-second idle timeout to manage connection pool overhead. Designed the central/tenant context switching pattern so all existing Eloquent models worked without modification.
Results & Impact
- Successfully onboarded 200+ tenants with full data isolation
- Migration across all tenants completes in under 4 minutes
- Zero cross-tenant data leaks in 18 months of production operation
- GDPR data residency requirements met for EU enterprise clients
- New tenant provisioning automated to under 30 seconds