DNS Anycast: Using BGP for DNS High-Availability

DNS has a number of mechanisms for redundancy and high availability. More often than not, clients will have a primary and secondary nameserver to talk to. However, if the primary nameserver fails for whatever reason, then the queries to the primary usually need to timeout before attempting queries to the secondary. Also the speed of general web browsing can often be dictated by how long it takes to receive a valid DNS response to the query. [Read More]