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Does the IP of the AWS load balancers ever change over time? Does anyone know the technical reasoning behind the requirement?

• agmiklas 16y ago
  Yup -- they most certainly do. I think they switch around the name -> IP mapping in response to traffic rates -- if you suddenly get a surge of traffic, they'll move your virtual ELB instance to a physical load balancer that is currently lightly loaded. Basically, they are doing load balancing for their load balancers. :)
  • rbranson 16y ago
    Does this actually cause a disruption of service though? It seems like it would be trivial to just keep the configuration in place for 72 hours even after changing the DNS entry.
    • agmiklas 16y ago
      They actually do that -- they keep the old IP live for a while to prevent problems with clients that might have cached the IP.
      • lox 16y ago
        So could we not update the A records IP address every couple of hours and still get roughly speaking the benefit of load-balanced load-balancers?