Re: Clustering - how can I.......

On May 17, 8:58 am, Bob Gezelter <gezel...@xxxxxxxxx> wrote:
To achieve load balancing on www servers, you would need to use:
- a router that supported multiple external addresses each mapping to
a different internal IP address
- DNS entries that distribute the translation results over the
different external addresses.

That's not really load balancing.

Round-robin DNS just gives out a different address for each
translation request. It doesn't take into account the actual load on
the system(s), nor does it account for DNS caching on the client.
Caching would prevent repetitive requests for the same translation,
thereby putting an unbalanced load on the target hosts because the
same IP address would be used until the TTL expired.
.

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