Project Highlights: Scalability: Showcase your ability to build scalable systems using microservices and asynchronous processing. Security: Implement secure user authentication and role-based access controls. Data Management: Use a mix of SQL (PostgreSQL) and NoSQL (MongoDB) databases to manage data effectively. Performance Optimization: Use Redis caching, asynchronous message queuing, and load balancing through API Gateway. Documentation: Write comprehensive API documentation using Swagger or SpringDoc OpenAPI.

Project Breakdown and Features:

1. User Management Service Description: Manages user registration, authentication (JWT), and profile management. Tech Stack: Java, Spring Boot, Spring Security, PostgreSQL. Key Features: User registration, login, and role-based authentication. Integration with a central authorization service using OAuth2. Highlights: Secure implementation using JWT tokens and role-based access control.
2. Product Catalog Service Description: Handles product information, inventory, and search. Tech Stack: Java, Spring Boot, MongoDB (NoSQL for flexibility), Redis (caching). Key Features: CRUD operations on products with category management. Caching frequently accessed products using Redis. Full-text search capability for product names and descriptions.
3. Order Processing Service Description: Manages order creation, processing, and tracking. Tech Stack: Java, Spring Boot, RabbitMQ (message queuing), MySQL. Key Features: Asynchronous order creation using RabbitMQ for high availability. Order tracking and status updates. Inventory management: reduce stock on order creation.
4. Payment Service Description: Manages payments and transactions. Tech Stack: Java, Spring Boot, Stripe API (or a mock payment processor). Key Features: Integration with a payment gateway (Stripe or PayPal). Handling refunds and payment verification. Secure storage of payment data (if applicable).
5. API Gateway and Service Discovery Description: Central API gateway for routing and load balancing. Tech Stack: Spring Cloud Gateway, Netflix Eureka. Key Features: Centralized routing to different microservices. Circuit breaker pattern for fault tolerance.
6. Deployment and DevOps Tools: Docker, Kubernetes, Jenkins (CI/CD), Grafana (Monitoring). Key Features: Containerize each microservice using Docker. Set up Kubernetes for container orchestration. Implement CI/CD pipeline for automated builds and deployment. Use Grafana and Prometheus for monitoring service health.