squid 2.6配置

配置文件

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 PURGE method PURGE
acl SSL_ports port 443
acl Safe_ports port 80          # http
acl Safe_ports port 21          # ftp
acl Safe_ports port 443         # https
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 allow localhost
http_access allow all
icp_access allow all

http_access allow PURGE localhost
http_access deny PURGE
http_port 3128 accel vhost vport
hierarchy_stoplist cgi-bin ?
access_log /var/log/squid/access.log squid
acl QUERY urlpath_regex cgi-bin \?
cache deny QUERY
refresh_pattern -i \.gif$   1440    50%     2880  
refresh_pattern -i \.jpg$   1440    50%     2880
refresh_pattern -i \.png$   1440    50%     2880
refresh_pattern -i \.mp3$   1440    50%     2880   
refresh_pattern -i \.wmv$   1440    50%     2880
refresh_pattern -i \.rm$   1440    50%     2880   
refresh_pattern -i \.swf$   1440    50%     2880
refresh_pattern -i \.mpeg$   1440    50%     2880
refresh_pattern -i \.wma$   1440    50%     2880
refresh_pattern -i \.css$ 10 50% 60 reload-into-ims
refresh_pattern -i \.js$ 10 50% 60 reload-into-ims
refresh_pattern -i \.xml$ 10 50% 30 reload-into-ims
refresh_pattern .               0       20%     1440
acl apache rep_header Server ^Apache
broken_vary_encoding allow apache
coredump_dir /var/spool/squid
cache_peer 192.168.10.46 parent 80 0 no-query originserver
cache_mem 2048 MB
cache_dir ufs /dev/shm/squid_cache 10240 16 256
maximum_object_size 4096 KB
maximum_object_size_in_memory 4096 KB

max_filedesc 4096

 

maximum_object_size_in_memory 可以不用设置过大，有效控制squid过度占用内存，设置参考

 Mean Object Size:       16.89 KB 项

 

一般cache容量和被加速内容的比值在1:10到1:20比较合适。
cache_dir aufs /var/spool/squid 10240 64 64
这是一个典型网站web caching server的cache_dir配置，加速100GB到200GB的内容

 

 response age =当前时间-对象进入cache的时间
 实际上，一个页面进入cache后，他的存活时间就确定了，即 (resource age) * 百分比，一直到被重新确认。
理解了百分比后,min max就好理解了
squid收到一个页面请求时：
1、计算出response age，
2、如果response agemax 则 stale
3、如果response age在之间，如果response时间<存活时间，fresh，否则stale

 

如果需要awstat分析，需要修改日志格式

logformat combined %>a %ui %un [%tl] "%rm %ru HTTP/%rv" %Hs %h" "%{User-Agent}>h" %Ss:%Sh %{host}>h
access_log /var/log/squid/access.log combined

 

http://blog.s135.com/book/squid/ squid权威指南