Hi Amos,
You were right. After I added header Cache-Control "max-age=60, must-revalidate" to the redirects, then the response was cached. Thank you for clarification.302 and 307 are not because as their status description indicates they are *temporary* results. They can only be cached if there are explicit details from the server indicating for how long.
301 should be cached unless the object would need revalidation immediately.
But for 301 I always get MISS - with and without a cache-control header:
$ curl -v http:/test.example.com/img301.jpg
> GET /img301.jpg HTTP/1.1
> Host: test.example.com
> User-Agent: curl/7.50.1
> Accept: */*
>
< HTTP/1.1 301 Moved Permanently
< Date: Thu, 21 Sep 2017 06:44:41 GMT
< Server: Apache
< Cache-Control: max-age=60, must-revalidate
< Location: http://test.example.com/img.svg
< Content-Length: 247
< Content-Type: text/html; charset=iso-8859-1
< X-Cache: MISS from <squid-proxy>
< X-Cache-Lookup: MISS from <squid-proxy>:3128
$ curl -v http:/test.example.com/img301.jpg
> GET /img301.jpg HTTP/1.1
> Host: test.example.com
> User-Agent: curl/7.50.1
> Accept: */*
>
< HTTP/1.1 301 Moved Permanently
< Date: Thu, 21 Sep 2017 06:44:41 GMT
< Server: Apache
< Cache-Control: max-age=60, must-revalidate
< Location: http://test.example.com/img.svg
< Content-Length: 247
< Content-Type: text/html; charset=iso-8859-1
< X-Cache: MISS from <squid-proxy>
< X-Cache-Lookup: MISS from <squid-proxy>:3128
I can't find any information on Squid wiki or via Google if the object need revalidation immediately.
I use Squid 3.4.14 from CentOS 6 package squid34-3.4.14-15.el6.x86_64.
With best regards,
zigi
On Tue, Sep 19, 2017 at 5:17 PM, Amos Jeffries <squid3@xxxxxxxxxxxxx> wrote:
On 20/09/17 02:00, kAja Ziegler wrote:
Hi all,
I want to ask why my Squid does not cache redirects 301, 302 and 307. See anomised example below. Even if I call the URL more times or I open it in the browser, I always get MISS independently of the return code 301, 302 or 307.
302 and 307 are not because as their status description indicates they are *temporary* results. They can only be cached if there are explicit details from the server indicating for how long.
301 should be cached unless the object would need revalidation immediately.
Amos
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