[CentOS] Load balancing...

[Tim Dunphy]

an interesting choice for low cost hardware load balancing appliances
is coyote point

http://www.coyotepoint.com/products/?gclid=CI6ri9jQu6cCFQbc4Aodmi1V4Q

however for my purpose open and free HAProxy remains best choice!!

On Sun, Mar 6, 2011 at 9:22 PM, Charles Polisher <cpolish at surewest.net> wrote:
> m.roth at 5-cent.us wrote:
>
>> A warning: round robin can be problematical.
>
> Amen. Consider what happens with round-robin DNS when one host
> stops working. Round-robin DNS will hand out the address of the
> failed host just as often as it did when it was all working.
> Some clients (applications) will attempt to use another one
> of the IP addresses they get from the DNS, some won't.
>
> A load balancer checks the health of the hosts and doesn't^Wshouldn't
> route traffic to hosts that aren't serving requests.
>
> There are other considerations for round-robin DNS. As
> you'll want to make the TTL's very small, you must expect
> much more DNS traffic, so expect more load on the DNS.
>
> --
> Charles Polisher
>
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