When I use the term “DNS Round Robin” I generally mean in in the sense of the “cheap load balancing technique” as OP describes it. But that’s not the only way DNS can be used for global high availability. Most of the time, it’s just hard for people with different (technology) backgrounds to communicate well. … Read more
Anycast is networking technique where the same IP prefix is advertised from multiple locations. The network then decides which location to route a user request to, based on routing protocol costs and possibly the ‘health’ of the advertising servers. There are several benefits to anycast. First, in steady state, users of an anycast service (DNS … Read more
Simply put: ———————————————————— | TYPE | ASSOCIATIONS | SCOPE | EXAMPLE | ———————————————————— | Unicast | 1 to 1 | Whole network | HTTP | ———————————————————— | Broadcast | 1 to Many | Subnet | ARP | ———————————————————— | Multicast | One/Many to Many | Defined horizon | SLP | ———————————————————— | Anycast | Many … Read more