Challenge 4: Implementing API Gateway for Microservices

Overview

In a microservices architecture, managing multiple services efficiently can be challenging. An API Gateway acts as a single entry point, handling authentication, rate limiting, request routing, and security.

Objective

Implement an API Gateway to centralize access to microservices, improving security, performance, and scalability.

Requirements

• Services:
  • Order Service: Handles order placement.
  • User Service: Manages user authentication and profiles.
  • Payment Service: Processes transactions.
• API Gateway Features:
  • Request routing to appropriate microservices.
  • Authentication and authorization.
  • Rate limiting to prevent abuse.
  • Logging and monitoring capabilities.

Steps to Solve

• Set up the API Gateway component.
• Configure route mapping to backend services.
• Implement authentication and rate limiting.
• Test request handling through the API Gateway.

Hints

• Use tools like Kong, Traefik, or Nginx as API Gateways.
• Implement JWT-based authentication for security.
• Monitor request patterns to optimize routing.

Example Use Case

Imagine an e-commerce platform where:

• The Order Service, User Service, and Payment Service exist as independent microservices.
• Clients interact with a single API Gateway instead of calling services directly.
• The API Gateway handles authentication and routes requests efficiently.

Bonus Points

• Implement caching for frequently requested data.
• Use WebSockets for real-time API Gateway communication.
• Enable logging and analytics to track API performance.

Resources

• Kong API Gateway
• Traefik API Gateway
• Nginx as API Gateway
• Other resources relevant to your tech stack.