1. Explanation
Zuul includes two main functions for routing and filtering requests:
Routing function: responsible for forwarding external requests to specific microservice instances, which is the basis for realizing a unified entrance for external access;
Filter function: responsible for intervening in the request processing process, which is the basis for realizing functions such as request verification and service aggregation.
Zuul and Eureka are integrated, and Zuul itself is registered as an application under the Eureka service governance, and at the same time, the information of other microservices is obtained from Eureka, that is, the future access to microservices is obtained after jumping through Zuul
Note: Zuul services will eventually be registered with Eureka