Containerized e-commerce platform with real-time stock and order handling, automated delivery services, and an admin back office.

• Go backend with Redis for carts and sessions, and Redis distributed locks so two buyers can't take the last item at once

• Next.js frontend with Discord OAuth2 sign-in

• MariaDB with transaction isolation tuned to keep checkout consistent

• Docker Compose deployment, with Kubernetes Horizontal Pod Autoscaler for scaling

• Cloudflare WAF, API rate limiting, activity logs, and HMAC-signed payment validation