I had been tasked with finding a way to load balance UDP on AWS. Normally we would use ipvsadm in at layer 4 DR but because of the limitations in ec2 this is not possible so another method was needed
Open Source Windows service for reporting server load back to HAProxy (load balancer feedback agent).
In general when you are load balancing a cluster you can evenly spread the connections through the cluster and you get pretty consistent and even load balancing. However with some applications such as RDS ( Microsoft Terminal Servers ), you can get very high load from just a  few users doing heavy work. The solution to this is to use some kind of server load feedback agent