How does load balancing works in DNS?

I have a account in and purchased a domain name. How how can I do load balancing based on GeoIP or round robin? How should I proceed? Any help/reference would be highly appreciated.
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James NewportCommented:
Isn't this the sort of service you need -
Dan CraciunIT ConsultantCommented:
Load balancing using Round Robin or GeoIP works only if you have 2 or more servers.

If you have multiple servers, each with it's own public IP, simply add them as multiple "A" records and you have Round Robin.

For GeoIP, the cheapest way is to use your own DNS server. There are plenty of guides on the Internet on how to us BIND with a GeoIP database.

For a truly effective global traffic manager, go with a service.  GTM is not trivial, and services are already set up to do it.

Round robin will give you load balancing, but it will not make your service "highly available."  Round robin suffers from the problem that if one of the servers is down, the round robin will still direct traffic to the failed server resulting in timeouts and performance issues.

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