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Not true: DNS servers can be configured with multiple A records for a single hostname, and the traffic will be spread round-robin. A DNS query will resolve to a
by SeoxyS 14y ago
Not true: DNS servers can be configured with multiple A records for a single hostname, and the traffic will be spread round-robin. A DNS query will resolve to a different IP for different clients.
At Chartboost, our systems are configured with every DNS query hitting one of 6 load balancers, which in turn spreads traffic to ~200 app servers.
- banachtarski 14y agoSure but then the DNS server is the one to many multiplexer. You can shove things around all you want, you'll still end up with either a single point of failure or weak consistency.
- jewel 14y agoSince DNS records change rarely, it's trivial to have multiple active DNS servers for a domain. In normal deployments, DNS doesn't have a single point of failure. It does have "weak consistency", like you say, but that doesn't matter if the records rarely change.