> Regarding the Load Balancing, I find ipvsadm to be a very good package. > I'm not well-versed with squid, but for 10,000 users, I should image > that hardware is not sufficient (especially if they're all requesting > pages at the same time?) > My immediate hunch would be to set up a virtualised squid proxy, and > then copy that across to be hosted on multiple servers. Providing it's > set up in a scalable fashion (maybe NFS share for config/rules) across > the entire cluster - you should be able to have a very scalable solution. Squid supports cache peering, cache hierarchies, and multicast ICP. I'd setup Squid peers. <http://www.deckle.co.za/squid-users-guide/Cache_Hierarchies>