On Tue, Sep 01, 2009, Dracul wrote: > Hi, > > Followup question regarding WCCP. > > How long does it take to refresh cached data in squid? Will wccp be able to > detect if the cached data is already a few hours old? Lets say > for news websites that are cached. Thanks!
That's a question for squid-users@, not cisco-nsp. But the answer is "it depends on the http caching semantics the site presents and how you have configured squid." Adrian > > regards, > Chris > > On Tue, Sep 1, 2009 at 3:36 PM, Dracul <[email protected]> wrote: > > > Thanks adrian, > > > > >That takes time - the WCCPv2 router will take a while to time out the > > >now-unreachable server. It would be possible to hack in some code to try > > >sending a last "gasping breath" packet to the WCCPv2 router to say the > > >cache is about to disappear, but it won't save existing connections. > > > > So will user in the network , "feel" the turnover of packets like they > > would just have some momentary > > lapse of connection (browsing or downloading via http) > > > > > > > > On Tue, Sep 1, 2009 at 2:52 PM, Adrian Chadd <[email protected]>wrote: > > > >> On Tue, Sep 01, 2009, Dracul wrote: > >> > Hi List, > >> > > >> > I'm planning to setup WCCP + Squid. > >> > >> Hi! > >> > >> > If the squid server should be offline or the squid process dies, will > >> the > >> > users? port 80 requests automatically redirect to the ?live? internet > >> > connection?? > >> > >> Yes! > >> > >> > Because in old "forced" redirection configurations, if the squid process > >> > dies or should the squid server be unreachable for some reason, user > >> will > >> > see a browser error. > >> > >> Indeed. > >> > >> > >From what I understand with WCCP documentation, if the squid dies or > >> the > >> > server is unreachable, the network should automatically redirect the > >> users > >> > to the gateway, without > >> > >> That takes time - the WCCPv2 router will take a while to time out the > >> now-unreachable server. It would be possible to hack in some code to try > >> sending a last "gasping breath" packet to the WCCPv2 router to say the > >> cache is about to disappear, but it won't save existing connections. > >> > >> > any disruption of any kind to their browsing experience. Are my > >> assumptions > >> > correct? Thanks! > >> > >> > >> > >> adrian > >> > >> > >> -- > >> - Xenion - http://www.xenion.com.au/ - VPS Hosting - Commercial Squid > >> Support - > >> - $25/pm entry-level VPSes w/ capped bandwidth charges available in WA - > >> > > > > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ -- - Xenion - http://www.xenion.com.au/ - VPS Hosting - Commercial Squid Support - - $25/pm entry-level VPSes w/ capped bandwidth charges available in WA - _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
