3) Poor man's 3DNS:
Have each of your web servers also be authoritative DNS servers, with each
returning only its own IP address. A DNS client queries all servers at the same
time, generally the nearest server will answer first. This also has the benefit
if that if a server is down, your DNS will no longer be directing clients to it.
Actually, you can do better than that using 'sortlist' in BIND 8.x/9.x to reorder multiple resource records. Check out:
http://www.isc.org/products/BIND/docs/config/options.html#sortlist
for more info.
-- Rob Szarka "Reality is what you can get away with." - R.A.Wilson
