SaaS Architecture: What the Tutorials Skip

D
Dick Edidiong Bassey
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SellTrove is a multi-tenant SaaS platform. Each seller gets their own storefront, data isolation, and configuration. The tutorials describe the product concept. They skip the architectural decisions that determine whether it is maintainable at scale.

The multi-tenancy strategy: shared database with tenant scoping via a TenantMiddleware that injects tenant context into every query. Every model applies WHERE tenant_id = ? automatically.

The operational decisions tutorials skip: how do you run database migrations for 1,000 tenants without downtime? (Batched, online schema change.) How do you isolate a tenant causing performance problems for others? (Per-tenant resource consumption monitoring with circuit breakers.)

SaaS architecture is a specialisation. Learn it before you build it.

— Dick Bassey | DevDick | 2025