AWS Fargate internal load balancer

Hi, I am trying to enable communication/data exchange between microservices in Fargate clusters. Q1: Can I place an internal load balancer in the middle of all MS and route requests based on path? Q2: My problem is, I am not sure DNS based service discovery is good option. What is my other alternatives for service discovery? I can use Netflix Eureka but not sure how to inform this registry data internal LB and autoscale MS (may be cloud-watch alarms). My other option is not to use AWS internal LB, but use Spring Cloud Gateway but need to also do autoscaling. Any ideas suggestions? Thanks