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Spring Boot 4 Microservices & REST APIs · Lesson

API Gateway with Spring Cloud Gateway

Set up a Spring Cloud Gateway to route requests, apply filters, and secure your microservices.

Why an API Gateway?

Microservices are great for building scalable applications, but they can introduce complexity. Imagine having many services, each with its own address and port.

An API Gateway acts as a single, unified entry point for all client requests. It funnels incoming traffic to the correct microservice, simplifying how clients interact with your backend.

What is Spring Cloud Gateway?

Spring Cloud Gateway (SCG) is a powerful, reactive API Gateway built on Spring Framework 5, Project Reactor, and Spring Boot 2. It's designed for high performance and scalability.

  • It provides flexible routing based on requests.
  • Enables dynamic filtering of requests and responses.
  • Integrates seamlessly with other Spring Cloud projects.

All lessons in this course

  1. Implementing Eureka Service Discovery
  2. Client-Side Load Balancing with Ribbon
  3. API Gateway with Spring Cloud Gateway
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