On 30/08/17 22:17, Olivier MARCHETTA wrote:
Hello Amos,
This morning, for some reasons, I can't reproduce the Hits in the memory.
Squid is only routed for tenant.sharepoint.com so I don't know what I was Hitting yesterday.
But I have collected extended info.
I repeatedly loaded the same .jpg file several times.
Always a Miss (high latency to access the file).
Information below:
Logs from the client (by Fiddler)
-------------------------------------------------------------------------
GET /sites/Marketing/Shared%20Documents/test_img_1.jpg HTTP/1.1
Cache-Control: no-cache
The above as a request header forbids cached content being delivered.
You will need either the reload-into-ims option on refresh_pattern, or
the ignore-cc option on your http_port line (use only as a last resort).
Connection: Keep-Alive
Pragma: no-cache
User-Agent: Microsoft-WebDAV-MiniRedir/10.0.14393
translate: f
Host: tenant.sharepoint.com
Cookie: FedAuth=*
HTTP/1.1 200 OK
Cache-Control: private,max-age=0
Content-Length: 1708509
Content-Type: image/jpeg
Expires: Tue, 15 Aug 2017 09:53:27 GMT
Last-Modified: Tue, 29 Aug 2017 14:06:14 GMT
Strange content, it expires 2 weeks before it was created/modified.
Accept-Ranges: bytes
ETag: "{852B897C-67C8-4620-AC40-53FB915EB62D},7"
<snip>
Date: Wed, 30 Aug 2017 09:53:26 GMT
X-Cache: MISS from squidserver.local
Via: 1.1 squidserver.local (squid/3.5.26)
Connection: keep-alive
-------------------------------------------------------------------------
Anyhow, this response is stale on delivery (max-age=0 and Expires
timestamp older than Date timestamp). So to cache it you will also need
the "store-stale" option on your matching refresh_pattern line.
You might also want to setup a limit on staleness with max_stale global
directive, or max-stale=N refresh_pattern option.
Amos
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