Re: UDP_HIT but TCP_MISS on Same Request?

David S. Madole wrote:
>
> Is there any legitimate way that Squid 2.1.PATCH2 and 2.2.PATCH4 can
> both be generating these types of log entries?:

ICP carries very limited amount of information, and it may be possible
that the request is more stale than permitted by the requestor or child
cache. This situation should however result in a TCP_REFRESH_* and not a
TCP_MISS.

There is also a race condition where the objcet may have been purged
from the cache in between the ICP and HTTP requests.

Third, if you use prefer_direct off or never_direct, then the request
may be a forced refresh (no-cache) causing the parent to ignore it's
cache.

--
Henrik Nordstrom
Spare time Squid hacker