Re: [SQU] high-availability proxies

Florin Andrei wrote:

> Suppose i wanna build a high-availability proxy: two identical machines,
> with different IP addresses, load-balanced through DNS. If one proxy goes
> down, it's enough to delete it from the DNS records, so the other proxy will
> (hopefully) take the entire traffic.

This is in fact how the TI firewall is structured. The DNS is structured in a
round robin resolution mode so that there is load sharing (not balancing) .
Note that most browsers, however, will cache the DNS entry, so they will need to
be restarted if the proxy they are using goes down. This is typically only a
minor problem.

>
> Do you think this is a good idea if i wanna minimize the problems with the
> proxy?

yes.

> What other high-availability solutions are there?

I have a local squid proxy which has worked continuously or 453 days without
restarting. If the beast is on good hardware, and the only applicationis the
proxy, then it is solid as a rock.

>
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Regards.
Don Rolph w-rolph@ds.mc.ti.com WD3 MS10-13 (508)-236-1263

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