Re: [squid-users] squid doesn't cache anything

It sounds like you're probably more advanced than I am with
squid, so I apologize if this is obvious, but I've learned some about
when things do and don't cache by lynxing pages through squid
and then lynxing them directly from the site & then comparing the headers
like this:

lynx -mime_header -dump http://my.squid.com/home.htm | head -n 15
lynx -mime_header -dump http://my.site.com/home.htm | head -n 15

Often I'll see that a header like Last-Modified, or Cache-Control isn't
being set the
way I need it to be.

>From: Tom Lahti <tom@tx3.net>
>To: squid-users@squid-cache.org
>Subject: [squid-users] squid doesn't cache anything
>Date: Fri, 31 Oct 2003 13:17:13 -0800
>
>I have been searching USENET archives, the mailing list archives, the FAQ,
>everything I can get my hands on for several hours. I have read about
>refreshing, no_cache and cache_peer, refresh_pattern, and I cannot get
>squid to write a damn thing to disk.
>
>Worse, it releases everything from memory before I even have a chance to
>hit refresh (even if I wanted to). How do I know this? I am tailing
>store.log in another window while a web page is a loading, and I can see
>the releases happening, even while the web page is still loading, and they
>have "RELEASE -1 FFFFFFFF" as the first 3 entries.
>
>The corresponding items in access.log are all TCP_MISS/200 (not 304). This
>occurs even after clearing the browser cache and restarting the browser and
>loading the site for the "first" time. I have checked site cacheability
>with a cacheability engine. I have changed refresh_pattern to give a
>positive minimum age to everything, and even added reload-into-ims.
>
>I started with a fresh RedHat 9 installation, applied all current errata
>RPMs, and then downloaded squid-2.5-STABLE4 sources and compiled it myself
>with the following options:
>
>Squid Cache: Version 2.5.STABLE4
>configure options: --program-prefix= --prefix=/usr --exec-prefix=/usr
>--bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc
>--datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib
>--libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/usr/com
>--mandir=/usr/share/man --infodir=/usr/share/info --exec_prefix=/usr
>--bindir=/usr/sbin --libexecdir=/usr/lib/squid --localstatedir=/var
>--sysconfdir=/etc/squid --enable-poll --enable-snmp
>--enable-removal-policies=heap,lru --enable-storeio=aufs,coss,diskd,ufs
>--enable-ssl --with-openssl=/usr/kerberos --enable-delay-pools
>--enable-linux-netfilter --with-pthreads
>--enable-basic-auth-helpers=NCSA,PAM,SASL
>--enable-external-acl-helpers=ip_user,unix_group
>
>which is a subset of what RedHat compiles with. I have not added any
>RedHat patches from their source RPM.
>
>My squid.conf (as briefly as possible):
>
>----------------------------------------------------------------
>cache_mem 64 MB
>cache_swap_low 94
>cache_swap_high 98
>maximum_object_size 32768 MB
>maximum_object_size_in_memory 32 KB
>cache_replacement_policy lru
>memory_replacement_policy lru
>
>cache_dir aufs /var/spool/squid 23000 16 256
>cache_access_log /var/log/squid/access.log
>cache_log /var/log/squid/cache.log
>cache_store_log /var/log/squid/store.log
>
>ftp_user myuser@
>
>refresh_pattern . 1440 20% 4320 reload-into-ims
>
>acl all src 0.0.0.0/0.0.0.0
>acl manager proto cache_object
>acl localhost src 127.0.0.1/255.255.255.255
>acl to_localhost dst 127.0.0.0/8
>acl SSL_ports port 443 563
>acl Safe_ports port 80 # http
>acl Safe_ports port 21 # ftp
>acl Safe_ports port 443 563 # https, snews
>acl Safe_ports port 70 # gopher
>acl Safe_ports port 210 # wais
>acl Safe_ports port 1025-65535 # unregistered ports
>acl Safe_ports port 280 # http-mgmt
>acl Safe_ports port 488 # gss-http
>acl Safe_ports port 591 # filemaker
>acl Safe_ports port 777 # multiling http
>acl CONNECT method CONNECT
>http_access allow manager localhost
>http_access deny manager
>http_access deny !Safe_ports
>http_access deny CONNECT !SSL_ports
>http_access deny to_localhost
>acl my_network src XXXXXXXXX/XX
>http_access allow my_network
>http_access allow localhost
>http_access deny all
>http_reply_access allow all
>icp_access allow all
>
>cache_effective_user squid
>cache_effective_group squid
>
>error_directory /etc/squid/errors
>
>coredump_dir /var/spool/squid
>
>----------------------------------------------------------------
>
>I think the last time I posted to a mailing list or USENET looking for
>technical help was probably 4 years ago; i.e. I don't often require help,
>and I'm willing to stick around and help others for awhile if I can get
>this solved (thereby reducing the load on the current list gurus). Let me
>know what I should try or what other things you'd like to see.
>
>
>TIA,
>
>Tom
>

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Received on Fri Oct 31 2003 - 15:15:00 MST