[squid-users] Reverse Proxy: Age

Hi,
I'm thinking of using Squid as a reverse proxy and I've got a question:

- If one uses min_age and max_age (and overrides expiry and last_mod) to
keep an object for a long time in cache. Would other caches around the
internet -such as ISP caches for example- be mislead by it and store the
object for a long time without re-checking it?

Here is more details: I would like to keep the objects in cache for a
very long time and only manually purge and reload them. To do so I would
set the min_age and max_age in the refresh_pattern to be very high. I
would not be happy though if because of that age, other caches
(transparent ISP caches) would keep those object for a long time and
never let clients access my reverse proxy.

I have the impression that the age is only dealt with internally to
Squid as in clients requesting pages would not care of the age of an
object by itself. And clients on the outside would not even be aware
that they are talking to a proxy (as it is in reverse mode).

Is this correct?

I hope this makes sense.
Any help very much appreciated.

Cheers.

-- 
Eric B. Blanchi