Round Robin DNS

Load balancing/Round Robin allows you to distribute your server load evenly among multiple servers. This is done by creating multiple A records with the same name but different IP values. For example:

Name-                    TTL-     Type-     IP-
dnsuniversity.com   1800      A       192.168.1.2
dnsuniversity.com   1800      A       10.2.54.4

50% of the time a user would go to 192.168.1.2 and 50% of the time the user would go to 10.5.54.4. You can split the traffic between as many as 13 hosts, and server load would be distributed evenly among all of them.