Microservices Decomposition & Gateway Routing

A growing commerce platform experienced tight coupling between ordering, catalog, and payment logic. Synchronous execution led to cascading failures when dependent services lagged, making isolated updates risky.

• Separated business domains into independent services: auth, catalog, order, payment, and supplier portals.
• Implemented Traefik as the single entry API Gateway to route frontend requests without exposing internal service topology.
• Introduced RabbitMQ event broker for asynchronous inter-service coordination.

• Replaced synchronous cross-service DB calls with asynchronous event messaging (e.g. order-service consumes payment.succeeded events).
• Maintained logical schema boundaries per service to prepare for physical database decoupling.
• Configured dynamic Traefik path rules to eliminate CORS and cross-origin complexity for client apps.

Services were packaged in Docker containers and wired to a shared messaging network. Asynchronous consumers handle state transitions independently, ensuring that order processing continues even during temporary downstream hiccups.

• Decoupled service deployments allowing domain logic to be modified without impacting unrelated modules.
• Eliminated synchronous payment blocking through resilient asynchronous queue workers.
• Standardized API ingress across mobile and web interfaces.