E-Commerce Platform Architecture

Full-featured e-commerce backend with order processing, payments, inventory tracking, and real-time notifications.

Services

• API Gateway (api_gateway) — Routes incoming requests to backend services — Kong, NGINX
• Order Service (service) — Manages order lifecycle and fulfillment — Node.js, TypeScript
• Payment Service (service) — Processes payments and refunds — Node.js, TypeScript
• Inventory Service (service) — Tracks product stock levels and reservations — Go
• Notification Service (service) — Sends email, SMS, and push notifications — Python
• Stripe (external) — Processes credit card transactions — Stripe API
• PostgreSQL (database) — Stores orders, products, and user data — PostgreSQL
• Redis (database) — Caches product catalog and session data — Redis
• Kafka (queue) — Streams order events between services — Apache Kafka

Connections

• API Gateway → Order Service (sync_http)
• API Gateway → Inventory Service (sync_http)
• Order Service → Payment Service (sync_http)
• Payment Service → Stripe (sync_http)
• Order Service → Kafka (async_event)
• Kafka → Inventory Service (async_event)
• Kafka → Notification Service (async_event)
• Order Service → PostgreSQL (db_access)
• Inventory Service → PostgreSQL (db_access)
• Inventory Service → Redis (db_access)