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API Gateway & Reverse Proxy (Nginx + Spring Cloud Gateway) · Lesson

JWT Authentication & Authorization

Implement JWT-based authentication and authorization within Spring Cloud Gateway to secure API access.

Securing Your API Gateway

In a microservices architecture, securing your APIs is paramount. Spring Cloud Gateway acts as a central entry point, making it the perfect place to enforce security policies.

This lesson focuses on using JSON Web Tokens (JWTs) for both authentication (who is this user?) and authorization (what can this user do?) directly within your Gateway.

Introducing JSON Web Tokens (JWTs)

A JSON Web Token (JWT) is a compact, URL-safe means of representing claims to be transferred between two parties. It's often used for authentication and information exchange.

  • Stateless: The server doesn't need to store session information.
  • Self-contained: Contains all the necessary user information and claims.
  • Scalable: Easy to use across multiple services without complex session management.

All lessons in this course

  1. JWT Authentication & Authorization
  2. Distributed Tracing with Sleuth/Zipkin
  3. Centralized Configuration with Config Server
  4. Exposing Metrics with Actuator & Prometheus
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