Accommo SaaS
A comprehensive SaaS concept for efficient property management. It centralizes operations, from property showcasing to booking management and guest communication, designed for scalability and multi-tenancy.
A multi-tenant SaaS architecture built on PostgreSQL with a schema-per-tenant isolation model to ensure strict data separation. The booking engine uses database transactions and pessimistic locking to prevent double-bookings.
The Challenge
The main architectural challenge for any multi-tenant SaaS is strict data isolation. I had to design a system where Tenant A's data (their properties, bookings, and guest information) was mathematically and logically impossible to be accessed by Tenant B, even though they share the same database and infrastructure.
The Solution
The backend was built on a PostgreSQL database using a schema-based isolation model. Every tenant is assigned their own database schema. Middleware at the application layer inspects every incoming request, identifies the authenticated tenant, and scopes all subsequent database queries to that tenant's specific schema. This enforces data isolation at the root level.
Solution Architecture
A visual diagram of the system's components and data flow is available.
Gerasimos Makris is an AI Web Developer with a background in FinTech operations. He specializes in building secure, scalable web applications that solve real-world financial problems. When he's not coding, he enjoys exploring the intersection of technology, finance, and business strategy.
