Tech Stack & Architecture
How to architect a multi-tenant SaaS product from day one?
Answer:
1. Choose a tenancy model early: database-per-tenant for maximum isolation, schema-per-tenant for balance, or shared schema with tenant_id columns for lowest cost. 2. Implement tenant context middleware at the API level to enforce data isolation. 3. Design all database queries to filter by tenant_id from the start - retrofitting is costly. 4. Use PostgreSQL row-level security (RLS) for enforcement at the database level. 5. Plan tenant-specific configurations, feature flags, and billing using LaunchDarkly and Stripe from the beginning.
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