We learned about the API Gateway pattern for the microservices architecture and also discussed the need for API Gateway for microservices-based applications. API Gateway has several benefits of being used in cloud-based distributed applications. In this chapter, we discussed how to implement the API Gateway proxy service using Spring Cloud's Netflix Zuul API.

We implemented a microservice, Edge Service, to provide a Zuul-based proxy service on top of the internal multiple microservices. The Edge Service can be used for common functionality implementations or cross-cutting concerns.

We also created multiple Zuul filters and registered with the Zuul proxy service.

In the next chapter, we will explore the Feign client in microservices-based applications.