Re: Just a quick check on a cache_peer setting

Hi Ray,

cache_peer proxy.mainsquid.com.au parent 80 3130 proxy-only no-
query

I think what this says is:
a) Your "child" cache will not use ICP to check whether or not the
parent has objects it wants.
b) That the child will not cache objects it gets from the parent.
c) All requests will go through the parent, and it (the parent) *will*
fetch objects on behalf of the "child" if it doesn't have them.

I reckon you might be better off with this (just my opinion--someone
correct me if I'm wrong ;-):

1) --enable-cache-digests at compile time. Almost *no* latency when
trying to find an object in a parent cache because the digest is held
locally in RAM.

2) cache_peer proxy.mainsquid.com.au parent 80 3130 no-query

I believe "no-query" stops the child Squid from ICP querying the
parent, but it doesn't stop the child from requesting the object from it.

With digests enabled, it'll just check the digest for available objects.
Proxy_Only can be turned on if you don't want the "child" to store
objects fetched from the parent digest hits. And...

3) "prefer_direct on" for good measure.

Now, the new Squid should never connect to the main cache, unless
it knows (from the cache digest) that the parent has the object it
wants. In all other cases, the child should go to the origin server
itself. Thinking about it, you might want to leave the "proxy-only" in
if your caches are so close together. It doesn't make much sense
to have the same object in two caches unless there is a big
performance hit in not doing so.

Is that what you need?
Jamie

On 19 Jul 00, at 12:22, Raymond Brighenti wrote:

> Hi all,
>
> I have just set up a new Squid machine, it's plugged into the same switch
> as our main Squid box (so there's virtually no latency) What I want is for
> all requests that Squid gets it will query our main Squid box for, if the
> main box doesn't have it or it's down Squid will go off and grab the page
> itself, I don't want the main Squid box to actually get anything for this
> box at all.
>
> So would the following line do this OK, It's currently working OK, is
> there anyway to make sure the main box is not fetching requests at all or
> will a setup like this simply not do it anyway
>
> cache_peer proxy.mainsquid.com.au parent 80 3130 proxy-only no-query
>
> Thanks
>
> Ray
>
>
>
> ============================================
> "In cases of major discrepancy it's always reality
> that's got it wrong....reality is frequently inaccurate."
> ============================================
>
Received on Wed Jul 19 2000 - 03:49:36 MDT