Thanks for the reply. Proxy technology amazes me as I am a computer science student. I feel generation 2 proxy technology is key to stopping invasive containers within a cybersecurity perspective. Again to spot them you need to cache them and scan for fingerprints, thus my fascination with Squid. Thanks again Sent from my iPhone > On Jul 11, 2024, at 22:02, Amos Jeffries <squid3@xxxxxxxxxxxxx> wrote: > > On 12/07/24 06:43, Jonathan Lee wrote: >> What is Vary Object loop?? > > In HTTP URLs can point at a set or "variants" of a resource. > > Squid "Vary Object" is an entry in the cache that is used to represent these types of resource. > When the URL-only is looked up, the "Vary Object" is found and tells Squid to perform a second lookup appending certain details to the hash key to find the actual object that client needs. > > A "Vary Object loop" is when this second lookup finds an object which is not the desired variant of that original URL. > > > You can see this in your first message ... > > > >> 10.07.2024 09:56:30 clientProcessHit: Vary object loop! > >> 10.07.2024 09:56:30 varyEvaluateMatch: Oops. Not a Vary match on > >> second attempt, > > Original request came in for "https%3A%2F%2Fstatic.foxnews.com" > > That URL had a cached "Vary Object" saying there were different responses to provide depending on the Accept-Encoding header: > > Squdi performed a second lookup for: > > >> 'origin="https%3A%2F%2Fstatic.foxnews.com", accept-encoding="gzip,%20deflate,%20br,%20zstd"' > > > ... which found a cache entry for this URL: > > >> 'https://zagent20.h-cdn.com/cmd/get_thumb_info?customer=foxnews&ver=1.165.67&url=https%3A%2F%2F247preview.foxnews.com%2Fhls%2Flive%2F2020027%2Ffncv3preview%2Findex.m3u8' > > > which is not the same URL. > > > >> Does that mean clear my cache? > > No. But yes. > > A quick check of the URLs from your log message with the tool at <https://redbot.org/?uri=https://static.foxnews.com/static/orion/styles/css/fox-news/article-new.rs.css> > > We can see that: > > " > The resource doesn't send Vary consistently. > The ETag doesn't change between negotiated representations. > " > > > You can ignore these log messages. > > Or, you can configure Squid not to cache content from this server. If you do this, then clearing the cache would stop the log entries continuing. > > >> Or is that something I am missing has anyone else seen this? > > That origin server is broken. So likely everyone is seeing the same problem with that website. > > >> 11.07.2024 11:36:49 clientProcessHit: Vary object loop! >> 11.07.2024 11:36:49 varyEvaluateMatch: Oops. Not a Vary match on second attempt, 'https://static.foxnews.com/static/orion/styles/css/fox-news/article-new.rs.css9; 'accept-encoding="gzip,%20deflate,%20br,%20zstd"' >> 11.07.2024 11:36:49 clientProcessHit: Vary object loop! >> 11.07.2024 11:36:49 varyEvaluateMatch: Oops. Not a Vary match on second attempt, 'https://static.foxnews.com/static/strike/ver/foxnews/loader.global.js' 'accept-encoding="gzip,%20deflate,%20br,%20zstd"' >> 31.12.1969 16:00:00 > <snip> > > > Cheers > Amos > _______________________________________________ > squid-users mailing list > squid-users@xxxxxxxxxxxxxxxxxxxxx > https://lists.squid-cache.org/listinfo/squid-users _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx https://lists.squid-cache.org/listinfo/squid-users
