Introduction
Building a SaaS product is one thing. Building one that scales is another. In this article we share lessons learned from shipping multiple SaaS products at JANTRA.
Database Architecture
The most critical decision is your database strategy. Multi-tenant databases with proper row-level security, connection pooling, and read replicas are essential from day one.
API Design
Design your API with versioning from the start. Use REST for simplicity or GraphQL for flexibility — but be consistent. Document everything with OpenAPI specs.
Authentication and Security
Never build auth from scratch. Use proven solutions and focus on your core product. Implement proper rate limiting and audit logging from the beginning.
Monitoring
You cannot improve what you cannot measure. Set up error tracking, performance monitoring, and business metrics dashboards before you launch.