[c-nsp] some WCCP questions

[Dracul]

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!

regards,
Chris

On Tue, Sep 1, 2009 at 3:36 PM, Dracul <chris.garzon at gmail.com> 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 <adrian at creative.net.au>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 -
>>
>
>