Re: [squid-users] Testing squids cache.

wh_at_msdrd.com wrote:
> Hello.
>
> Today I was looking at my access.log file trying to test how is my squid
> conf behaving. I noticed that not much of the requested pages get
> cached, this means even google.com. I ran the following command just to
> see if some of the pages are getting served locally or being requested
> by squid:
>
> tail -f /var/log/squid/access.log | grep TCP_HIT
>
> I request a page the first time and, ok, it doesn't get a hit since is
> not cached. Now, I clear my local browser cache and try again. This time
> the page still doesn't get cached, not even an image does. I check the
> page's code and I don't see the no-cache meta in it.

Squid is an HTTP proxy. The page code is not relevant to Squid and is
ignored.

The HTTP protocol headers contain Cache-Control: header with controls
Squid uses for storage decisions amongst other things. I know that
google.com do set non-cachable in their Cache-Control: for their pages,
even the first.

I would suggest entering any URL you want to check into the tester at
http://www.redbot.org/

Amos

>
> Why is not getting cached? I've read that only 20% of the stuff gets
> cached. Is that correct?
>
> Please help me optimize my squid server.
>
> Thanks in advanced.
>
> Here's my squid.conf file:
>
> # Port Squid listens on
> http_port 192.168.2.1:3128 transparent
>
> # Access-lists (ACLs) will permit or deny hosts to access the proxy
> acl lan-access src 192.168.2.0/255.255.255.0
> acl localhost src 127.0.0.1
> #acl all src 0.0.0.0/0.0.0.0
> acl CONNECT method CONNECT
>
> # Access rule
> http_access allow localhost
> http_access allow lan-access
>
> maximum_object_size 64000 KB
>
> cache_mem 256 MB
>
> access_log /var/log/squid/access.log
> cache_log /var/log/squid/cache.log
> cache_store_log /var/log/squid/store.log
>
> cache_dir ufs /var/log/squid/cache 40000 255 255
>
> htcp_port 0
> icp_port 0
>
> extension_methods SEARCH NICK
> quick_abort_min -1 KB
>
> negative_ttl 1 minutes
>
> connect_timeout 90 seconds
>
> dns_nameservers 196.3.81.5 200.88.127.22 196.3.81.132
>
> logfile_rotate 5
>
> refresh_pattern ^ftp: 1440 20% 10080
> refresh_pattern ^gopher: 1440 0% 1440
> refresh_pattern (cgi-bin|\?) 0 0% 0
> refresh_pattern . 0 20% 4320
>
>

-- 
Please be using
   Current Stable Squid 2.7.STABLE6 or 3.0.STABLE16
   Current Beta Squid 3.1.0.10 or 3.1.0.11