SaaS Application
Web ApplicationModern SaaS with auth, billing, real-time features, and error monitoring
10 nodes9 connections
Use Case
SaaS products, subscription platforms, dashboards
Stack Breakdown
ReactNext.jsNestJSPostgreSQLRedisStripe
Architecture Layers
1Frontend SPA
2API Gateway
3Backend Services
4Data Layer
5External Integrations
Components by Category
frontend
ReactNext.js
backend
API GatewayAuth ServiceNestJSWorker Service
database
PostgreSQLRedis
external
StripeSentry
Why This Topology Works
Cleanly separates frontend concerns from business logic via an API gateway. Auth, billing, and monitoring are decoupled services, making the stack horizontally scalable and independently deployable.
Scaling Notes
Backend services scale horizontally behind the gateway. Redis caches session data and hot reads. PostgreSQL handles persistent state with read replicas for analytics queries.
Observability
Sentry captures frontend and backend errors. Structured logging flows through the API gateway for traceability.