E-Commerce Microservices on EKS

A complete microservices architecture for learning EKS deployments with 10 interlinked services.

Architecture Overview

Services

1. Frontend Service (React) - Customer-facing web application
2. API Gateway (Node.js) - Routes and authenticates requests
3. User Service (Node.js) - User management and authentication
4. Product Service (Python/Flask) - Product catalog management
5. Order Service (Node.js) - Order processing and management
6. Payment Service (Node.js) - Payment processing integration
7. Inventory Service (Python/Flask) - Stock and inventory management
8. Notification Service (Node.js) - Email/SMS notifications
9. Review Service (Node.js) - Product reviews and ratings
10. Analytics Service (Python/Flask) - User behavior analytics

Databases

• PostgreSQL - User, Product, Order data
• MongoDB - Reviews and Analytics data
• Redis - Caching and session management

Service Communication Flow

Frontend → API Gateway → {
    User Service → PostgreSQL
    Product Service → PostgreSQL + Redis
    Order Service → PostgreSQL + Inventory Service + Payment Service
    Payment Service → External API
    Inventory Service → PostgreSQL
    Notification Service → Message Queue
    Review Service → MongoDB
    Analytics Service → MongoDB + Redis
}

Prerequisites

• AWS CLI configured
• eksctl installed
• kubectl installed
• Docker installed
• AWS account with appropriate permissions

Quick Start

1. Create EKS Cluster

eksctl create cluster \
  --name ecommerce-cluster \
  --region us-west-2 \
  --nodegroup-name standard-workers \
  --node-type t3.medium \
  --nodes 3 \
  --nodes-min 1 \
  --nodes-max 4 \
  --managed

2. Build Docker Images

./scripts/build-all.sh

3. Push to ECR

./scripts/push-to-ecr.sh

4. Deploy to EKS

kubectl apply -f k8s/namespaces/
kubectl apply -f k8s/databases/
kubectl apply -f k8s/services/
kubectl apply -f k8s/ingress/

Project Structure

├── services/           # Microservices source code
├── k8s/               # Kubernetes manifests
├── scripts/           # Deployment scripts
└── docs/              # Additional documentation

Monitoring

Access monitoring dashboard:

kubectl port-forward -n monitoring svc/grafana 3000:3000

Cleanup

kubectl delete -f k8s/
eksctl delete cluster --name ecommerce-cluster