From Minikube to AWS EKS: How I Built a Zero-Downtime Blue-Green Deployment Pipeline for ShopSwift (opens in new tab)

I built ShopSwift, a Node.js/Express e-commerce API, and wrapped it in a production-grade blue-green deployment pipeline: Docker, Kubernetes, Minikube local validation, NGINX Ingress, GitHub Actions CI, AWS EKS, Amazon ECR, and Prometheus + Grafana monitoring. Zero failed requests across every switch and rollback. Here is exactly how I did it - including the architecture mistake that caused a 503, and the fix that made it truly zero-downtime. The Real Problem With Shipping Software Releasing ...