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How does loadbalancing work?

From: james
Date: Thursday, March 8, 2001
Time: 8:53:10 am

i've been trying to load balance a zone using 50-50 "preference" directed
to two servers. using LB tester the DNS load balancing on domain.com
appears to be functioning based on the www. preferences below:

TTL: 300
Interval: 30
Hostlife: 60

host a: 50
host b: 50

however, when i view the webstar log, one server seems to be handling 95-99%
of all the load/hits.

the concept seems simple; a browser requests a zone and the dns server will
send the browser to the appropriate server based on the preferences.

this zone probably becomes cached inside the users browser for x amount of
time. this would account for the dns server not being able to balance the
cached hits. still, i can't quite figure out why the zone seems to favor one
server over the other. am i missing something?

thanks,
-james




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