Acronym for Global Server Load Balancing

GSLB is load balancing multiple POPs/sites, trying to give users closer access to the content, rather than just rrDNS. It's supposed to be more intelligent.

A GSLB is usually a device which is a DNS server that also knows about load on the POP?s, similar to an L4 Switch?, so can swing traffic to the one which is loaded least, etc.

GSLB is NOT the same as simple RRDNS using multiple A records.

For example, Akamai, though Akamai uses way more advanced shit than GSLB. Akamai's GSLB is a combination of DNS, ping, traceroute, and BGP.

See also:

• http://tenereillo.com/GSLBPageOfShame.htm