Re: [squid-users] How to setup squid proxy to run in fail-over mode

>>>> 1. Use de WPAD protocol: lets say PROXY squid1; PROXY squid2
>>>> (this is fail over)

IMHO, using PAC (with or without WPAD) is the simplest and most
effective approach to failover, requiring no additional software
beyond a web server to host the PAC file.

With PAC, the browser will automatically switch to the second proxy in
the list if the first stops responding. All modern graphical browsers
support PAC, and nearly all support WPAD.

The PAC script is very powerful, you can use many, but not all,
Javascript string and numeric functions. With a little effort you can
have PAC distribute user load across multiple proxy servers, or even
hash the request URL so, for example, all requests for dilbert.com
first go to squid1, to get the most value from cached content.

For more on PAC, see http://wiki.squid-cache.org/Technology/ProxyPac
Received on Mon Jun 15 2009 - 21:36:11 MDT