Re: [squid-users] Alteon + squid

actually, i was asking about caching [saving] the same
object on more than once cache... if u were using the
Alteon, how would u ensure that aside from getting
load balancing advantages, u don't end up caching the
same object on all your servers...?..

the idea, i think, would be to cache an object once,
on any of the servers, and if a user requests an
object, the squid servers would probably use ICP to
check with each other whether the object is cached,
and if not, retrieve it.. but then the other squid
servers would have to know that one of them has the
object, and therefore, shouldn't cache it...

if this were case, which would be a very efficient way
of utilising resources, wouldn't this present a
latency issue.. because as a user waits for his
browser to respond to a search, squid servers are busy
talking to each other at the back end... please
advise...

AKNIT

 --- Wei Keong <chooweikeong@pacific.net.sg> wrote: >
I suppose you are referring to having duplicate
> objects in the layer 1
> squid servers? Is fine actually, since the layer 1
> squid dont cache any
> objects, just forward requests and replies.
>
> Our concern is to achieve higher hit rate in the
> layer 2 squid servers.
> If it is beneficial, we can further separate the
> layer 2 squid servers to
> smaller clusters to handle specific domain range.
>
> Rgds,
> Wei Keong
>
>
> On Wed, 17 Jul 2002, [iso-8859-1] Mark Tinka wrote:
>
> > just a thought i've developed... when u are using
> the
> > Alteon load balancer, how do u ensure that u don't
> > have duplicate information across your cache
> > servers.... do u do this by using Squid
> cache-peering
> > feature... this is important, as u wouldn't want
> to
> > have the same object on each cache server... as u
> > maximise efficiency and hit rate...
> >
> > AKNIT
> >
> >
> > --- Wei Keong <chooweikeong@pacific.net.sg>
> wrote: >
> > Hi,
> > >
> > > After trying for the past few days, seems like
> I've
> > > no luck with the
> > > Alteon domain redirection/load balancing.
> > >
> > > Our current implementation is such that all
> Squid
> > > boxes (>10) are load
> > > balanced by the Alteon. We are thinking of using
> > > Squid to forward requests
> > > to separate Squid pool based on domain.
> > >
> > >
> > > | Alteon |
> > > / \
> > > |Squid| |Squid| layer 1
> > > | \ / |
> > > | \ / |
> > > | / \ |
> > > | / \ |
> > > |Squid| |Squid| layer 2
> > > .com !.com
> > >
> > >
> > > Essentially, the first layer Squid will only
> examine
> > > requests and forward
> > > to second layer Squid. However, we are yet to
> test
> > > the load and
> > > latency of deploying this architecture. And,
> > > ultimately, we need to
> > > find out whether this will bring significant
> > > benefits (hit rate).
> > >
> > > So, squid guru, any input on such an
> implementation?
> > >
> > >
> > > Rgds,
> > > Wei Keong
> > >
> > >
> > >
> > > On Mon, 15 Jul 2002, Wei Keong wrote:
> > >
> > > > Ya, have done testing based on the examples in
> the
> > > documentation. But, it
> > > > doesn't seem to work.
> > > >
> > > > Understand that it will not affect Squid in
> > > anyway, just want to see if
> > > > anyone has more info on Alteon.
> > > >
> > > > I am also looking into using CARP to do url
> load
> > > balancing/redirection
> > > > (eg. separate .com and !.com). However, I am
> not
> > > sure if it will be bottle
> > > > neck for request processing. Do you know of
> > > successful implementation of
> > > > large-scale CARP? Besides, L4-7 switch and
> CARP,
> > > is there any way to do
> > > > url load balancing/redirection?
> > > >
> > > > Rgds,
> > > > Wei Keong
> > > >
> > > >
> > > > On Sun, 14 Jul 2002, Henrik Nordstrom wrote:
> > > >
> > > > > The Alteon documentation should contain
> quite
> > > detailed descriptions of
> > > > > how it works and how to set it up.
> > > > >
> > > > > Note: This does not really affect Squid in
> any
> > > manner. Is just a
> > > > > method to get the requests to the correct
> Squid
> > > server.
> > > > >
> > > > > Regards
> > > > > Henrik
> > > > >
> > > > >
> > > > > On Sunday 14 July 2002 17.02, Wei Keong
> wrote:
> > > > > > Hi,
> > > > > >
> > > > > > I am working on url load balancing squid
> boxes
> > > using Alteon
> > > > > > AceDirector. Unfortunately, there isn't
> much
> > > resources/docs
> > > > > > available.
> > > > > >
> > > > > > Has anyone tried Alteon url load balancing
> > > before? Is there any
> > > > > > forum/discussion group on this? Where can
> i
> > > find more info?
> > > > > >
> > > > > > Thanks,
> > > > > > Wei Keong
> > > > >
> > > >
> > > >
> > >
> >
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>

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Received on Thu Jul 18 2002 - 00:24:14 MDT