Assignment

Scenario:

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You are tasked with designing and implementing a distributed microservices-based e-commerce platform backend in Go. This platform should be highly scalable, fault-tolerant, and capable of handling various services, including user management, product catalog, order processing, and payment integration.

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Requirements:

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• Step 1: Microservices Architecture

• Design a microservices architecture for the e-commerce platform, including defining the services, their responsibilities, and how they communicate. Implement each service as a separate Go application.

• Step 2: Service Discovery and Load Balancing

• Implement service discovery and load balancing mechanisms to ensure that services can discover and communicate with each other efficiently. Consider using a tool like Consul or etcd.

• Step 3: Authentication and Authorization

• Implement a central authentication and authorization service. Secure all services with JWT-based authentication. Define role-based access control (RBAC) to restrict access to certain services or actions.

•  Step 4: User Management Service

• Create a user management service responsible for user registration, login, and profile management. Store user data securely, including passwords using bcrypt.

• Step 5: Product Catalog Service

• Develop a product catalog service that allows users to browse products and view product details. Implement search and filtering functionality for products.

• Step 6: Order Processing Service

• Implement an order processing service that handles order creation, updates, and status tracking. Ensure that orders are processed asynchronously and reliably.

• Step 7: Payment Integration

• Integrate a payment gateway (e.g., Stripe) into the platform for order payments. Implement secure and reliable payment processing.

• Step 8: Caching and Data Persistence

• Implement caching mechanisms to improve performance for frequently accessed data. Choose an appropriate database (e.g., PostgreSQL, MongoDB) for data persistence. Ensure data consistency and reliability.

• Step 9: Monitoring and Logging

• Implement monitoring and logging to track service health, performance, and errors. Use a tool like Prometheus and Grafana for monitoring.

• Step 10: Scalability and Fault Tolerance

• Ensure that the system can scale horizontally to handle a growing number of users and requests. Implement fault tolerance mechanisms to handle service failures gracefully.

• Step 11: API Gateway

• Create an API gateway that serves as the entry point for client applications and routes requests to the appropriate microservices. Implement rate limiting and request validation.

• Step 12: Deployment and Orchestration

• Prepare the microservices for deployment in a production environment. Provide deployment scripts and instructions for containerization (e.g., Docker) and orchestration (e.g., Kubernetes).

• Step 13: Security

• Implement security measures to protect against common web security vulnerabilities (e.g., SQL injection, CSRF). Secure sensitive data, including user information and payment details.

• Step 14: Testing and Documentation

• Write comprehensive unit tests and integration tests for each microservice. Provide clear and detailed documentation for deploying, scaling, and maintaining the platform.

• Step 15: Bonus (Optional)

• Implement user reviews and ratings for products. Add support for multiple languages and internationalization. Implement a notification service to notify users about order updates.