A microservice system could have a high number of components with complex interactions. It is important to reduce this complexity, at least from the standpoint of the clients interacting with the system. A gateway hides the microservices from the external world. It represents a unique entrance and implements common cross requirements. In this article, you will learn how to configure a gateway component for a Spring Boot application, using the Spring Cloud Gateway package.

Spring Cloud Gateway

Spring Cloud provides a gateway implementation by the Spring Cloud Gateway project. It is based on Spring Boot, Spring WebFlux, and Reactor. Since it is based on Spring WebFlux, it must run on a Netty environment, not a usual servlet container.