Quote:
Originally posted by Big Ray
What does the end user see when a load balanced server goes down?
What does the end user see what a RR DNS server foes down?
Very different outcomes. With RR, you loose a significant portion of your traffic. Load Balance, the hardware takes the server out of rotation.
Trust me when I say I know what I am talking about. I have been doing this since Local Director was a startup (not owned by Cisco) shipping me demo boxes to test back at my days at Schwab.
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Big Ray, everything you are saying is accurate and I'm in no
way doubting that you know what you are doing.
You
are correct in saying that when a RR server goes down
that one can lose some traffic until such time as you've
taken the broken server out of the rotation and all
name servers have refreshed with new info. If you
keep your TTL fairly low, 15 minutes or so, and if you
are quick to take broken servers out of rotation (perhaps
automatically by an outage detection script) then this
can be minimized. Anyway, all i'm suggesting is that
its a cost versus benefit situation. For hosting galleries
i personally don't think that having redudant hardware
load balancers is worth the expense (actually, to be honest, i haven''t looked at recent prices - its entirely possible they
are really cheap now, but they certainly were not
a couple years ago) If thats the case, just ignore me
entirely and pretend i didn't open my mouth).
- jpoker