[squid-users] Reverse proxy always misses cache items (dynamic pages)

I have Squid 3.3.8 as reverse proxy for a website with MediaWiki, on a
FreeBSD 6.2 server.

All the requests are missed. (PHP files with parameter). At this point my
only idea is that something is wrong with my refresh_pattern. I didn't set
up a cache directory, it appears that Squid creates the cache on each
individual directory, but I don't know if that could be a reason as well. I
would appreciate any suggestions.

Squid.conf:
----------------------------
http_access allow manager localhost

http_port 3129 accel defaultsite=my_domain.org
cache_peer 127.0.0.1 parent 3130 0 no-query originserver name=myAccel
login=PASS forceddomain=my_domain.org

acl our_sites dstdomain my_domain.org
acl our_sites2 dstdomain localhost
http_access allow our_sites
http_access allow our_sites2

http_access allow localhost

refresh_pattern -i (/cgi-bin/|.php|\?) 0 20% 4320
refresh_pattern . 0 20% 4320

cache_peer_access myAccel allow our_sites
cache_peer_access myAccel allow our_sites2

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
http_access deny !Safe_ports

----------------------------
LocalSettings.php includes
----------------------------
$wgUseSquid = true;
$wgSquidServers = array('my_ip_address');
$wgSquidServersNoPurge = array('127.0.0.1');

----------------------------
php.ini
----------------------------
session.cache_limiter = nocache
session.cache_expire = 180
----------------------------
Access.log
----------------------------
1385607796.200 410 127.0.0.1 TCP_MISS/200 53326 GET
http://localhost:3129/index.php? - FIRSTUP_PARENT/127.0.0.1 text/html
1385607804.362 679 127.0.0.1 TCP_MISS/200 90061 GET
http://localhost:3129/index.php? - FIRSTUP_PARENT/127.0.0.1 text/html
1385607819.385 264 127.0.0.1 TCP_MISS/200 29761 GET
http://localhost:3129/index.php? - FIRSTUP_PARENT/127.0.0.1 text/html
1385607839.019 9155 127.0.0.1 TCP_MISS/200 202193 GET
http://localhost:3129/index.php? - FIRSTUP_PARENT/127.0.0.1 text/html
1385607864.018 601 127.0.0.1 TCP_MISS/200 53369 GET
http://localhost:3129/index.php? - FIRSTUP_PARENT/127.0.0.1 text/html
1385607874.986 410 127.0.0.1 TCP_MISS/200 53343 GET
http://localhost:3129/index.php? - FIRSTUP_PARENT/127.0.0.1 text/html
1385607886.312 681 127.0.0.1 TCP_MISS/200 90056 GET
http://localhost:3129/index.php? - FIRSTUP_PARENT/127.0.0.1 text/html
1385607906.361 467 127.0.0.1 TCP_MISS/200 29656 GET
http://localhost:3129/index.php? - FIRSTUP_PARENT/127.0.0.1 text/html
1385607929.508 16872 127.0.0.1 TCP_MISS/200 202146 GET
http://localhost:3129/index.php? - FIRSTUP_PARENT/127.0.0.1 text/html
----------------------------

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