E-Commerce Microservices Portfolio

“Building backend systems with clarity, strategy, and craftsmanship — inspired by Krishna’s wisdom: calm, strategic, and precise in every action.”

High-Level Architecture

A world-class microservices architecture:

                  ┌─────────────────────┐
                  │  API Gateway Service │
                  └─────────┬───────────┘
                            │
        ┌───────────────────┼───────────────────┐
        │                   │                   │
┌───────────────┐   ┌───────────────┐   ┌───────────────┐
│ Product       │   │ User Service  │   │ Payment       │
│ Service       │   │               │   │ Service       │
└─────┬─────────┘   └─────┬─────────┘   └─────┬─────────┘
      │                   │                   │
      ▼                   ▼                   ▼
  ┌──────────┐       ┌──────────┐       ┌──────────┐
  │  MySQL / │       │  MySQL / │       │  MySQL / │
  │    H2    │       │    H2    │       │    H2    │
  └──────────┘       └──────────┘       └──────────┘
                            │
                            ▼
                  ┌─────────────────────┐
                  │ Email Notification  │
                  │ Service             │
                  └─────────────────────┘
            

• Service Discovery (Eureka) monitors all services.
• Kafka handles event-driven workflows.
• API Gateway: Centralized entry point routing requests seamlessly
• Service Discovery: Dynamic microservice lookup with Eureka
• Product Service: Advanced product & category management
• User Service: Authentication & Authorization using JWT + RBAC
• Payment Service: Payment lifecycle management using Strategy + Factory patterns
• Email Service: Event-driven notifications for real-time updates

Key Highlights

• Architectural Excellence: Layered design (Controller → Service → Repository), DTO-first, and robust exception handling.
• Design Patterns Applied: Strategy + Factory (Payment), Event-Driven (Email), RBAC + JWT (User), and Microservices Orchestration (Eureka + API Gateway).
• Recruiter-Friendly: Demonstrates scalable, maintainable, production-ready microservices.