Spring Cloud Gateway + Eureka - Fazendo seus backends terem IPs dinâmicos e ainda assim serem encontrados
O Eureka tem o papel de fazer "Service Discovery".
Referências
Documentação Oficial do Spring - Eureka Server
https://cloud.spring.io/spring-cloud-netflix/multi/multi_spring-cloud-eureka-server.html
Tutorialspoint - Eureka Server
https://www.tutorialspoint.com/spring_boot/spring_boot_eureka_server.htm#:~:text=Eureka%20Server%20is%20an%20application,also%20known%20as%20Discovery%20Server.
Padrão de projetos microserviços - Server-side service discovery
https://microservices.io/patterns/server-side-discovery.html
Tutorial Spring Cloud Gateway + Eureka
https://progen.medium.com/load-balancing-spring-cloud-applications-using-eureka-and-spring-cloud-gateway-43d0bcf57cc3