Re: IMS requests seemingly flush the cache of old small gifs

Benno Blumenthal wrote:

> 916112439.063 187 207.172.89.166 TCP_REFRESH_HIT/200 339 GET
> http://208.194.115.121/mapicons/Career_Web.gif -
> DIRECT/208.194.115.121 image/gif

TCP_REFRESH_HIT is when Squid validated the cached object with the
origin server. This happens when
1. Object has expired
2. refresh_pattern says it has to
3. The user pushes reload in their browser.

> This is part of what was confusing me -- the REFRESH hit is marked
> DIRECT, while I was expecting it to be marked NONE.

TCP_REFRESH_HIT is when the origin server was contacted to verify that
the cache is up to date. Pure cache hits are marked as TCP_HIT.

---
Henrik Nordstrom
Spare time Squid hacker