SaaS Subscription Platform

Business Problem

The startup needed a complete subscription management infrastructure including multi-tenant data isolation, flexible pricing models, usage-based billing, team collaboration features, and a scalable architecture that could grow from dozens to thousands of tenants.

Solution

Architected a multi-tenant SaaS platform using Laravel with database-per-tenant isolation strategy, Laravel Cashier for Stripe subscription management, team workspace system with role-based permissions, and a billing engine that handles prorations, upgrades, and downgrades.

Architecture

Multi-tenant architecture with Tenant Isolation Layer, Subscription Management Engine, Billing Service, Team Workspace Module, and Analytics Dashboard. Uses central database for tenant routing, separate databases per tenant for data isolation, and Stripe webhooks for subscription lifecycle events.

Challenges

Implementing seamless tenant provisioning with zero downtime, designing a pricing engine that supports metered billing, free trials, and grandfathering, handling Stripe webhook idempotency for reliable subscription updates, and building cross-tenant admin capabilities.

Performance Optimizations

Connection pooling for tenant databases reduced overhead by 70%, caching tenant configuration in Redis eliminated repeated lookups, batched Stripe webhook processing improved throughput by 3x, and implemented lazy tenant loading for admin panel performance.

Key Features