[squid-users] normal squid , can we cahce fcebook vidoes ?

Eliezer Croitoru eliezer at ngtech.co.il
Tue Oct 20 13:23:37 UTC 2015

The chunked should not affect squid caching as far as I can tell how 
squid works.
If you indeed have seen this I encourage you to report a bug.
The ETAG can affect drastically when validating objects.
The situation I know about ETAG is like this:
- more then 1 mirror
- each of the mirrors supply different ETAG for the same content\file
The above will result in a situation which a if modified re-validation 
will see the different ETAG and will decide that the object is not the 
same as the one exists in the cache.
My test subject was fedora and CentOS mirrors which have this issue and 
StoreID usage to de-duplicate content from two or more mirrors causes 
invalidation of cached content and a re-fetch each and every time.

I had in mind an idea to write in the wiki about the different things 
which can prevent StoreID usage to be useful, if you can contribute from 
your experience to this addition I will be grateful.
Of-course this is a off list topic.


On 20/10/2015 13:11, FredT wrote:
> Eliezer,
> I'm not sure it's due to the Etag only...
> I did many tests and some with Etag are cached and some are not.
> But it seems objects including a "Transfer-Encoding: chunked" cannot be
> cached with a Etag. I don't know if it's related or not, maybe you know
> Bye Fred
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