我正在使用带有 adzap 的 squid，squid/adzap 可能不会缓存特定域，例如 cnn.com。这是我的squid.conf文件：
#
# Recommended minimum configuration:
#
acl manager proto cache_object
acl localhost src 127.0.0.1/32
#acl localhost src ::1/128
acl to_localhost dst 127.0.0.0/8 0.0.0.0/32
#acl to_localhost dst ::1/128
# Example rule allowing access from your local networks.
# Adapt to list your (internal) IP networks from where browsing
# should be allowed
acl localnet src 192.168.1.0/24
acl localnet src 192.168.2.0/24
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
#
# Recommended minimum Access Permission configuration:
#
# Only allow cachemgr access from localhost
http_access allow manager localhost
http_access deny manager
# Deny requests to certain unsafe ports
http_access deny !Safe_ports
# Deny CONNECT to other than secure SSL ports
http_access deny CONNECT !SSL_ports
# We strongly recommend the following be uncommented to protect innocent
# web applications running on the proxy server who think the only
# one who can access services on "localhost" is a local user
#http_access deny to_localhost
#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#
# Example rule allowing access from your local networks.
# Adapt localnet in the ACL section to list your (internal) IP networks
# from where browsing should be allowed
http_access allow localnet
http_access allow localhost
# And finally deny all other access to this proxy
http_access deny all
# Squid normally listens to port 3128
http_port xxx.xxx.xxx.yyy:3128 transparent
visible_hostname proxyserver.local
# We recommend you to use at least the following line.
hierarchy_stoplist cgi-bin ?
# Uncomment and adjust the following to add a disk cache directory.
cache_dir ufs /var/spool/squid 1024 16 256
# Leave coredumps in the first cache dir
coredump_dir /var/spool/squid
# Add any of your own refresh_pattern entries above these.
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern . 0 20% 4320
access_log /var/log/squid/squid.log squid
access_log syslog squid
redirect_program /usr/local/adzap/scripts/wrapzap
固定使用
acl allow_domains dstdomain www.cnn.com
always_direct allow allow_domains
答案1
我很惊讶它always_direct居然能起作用。正如其他人所说，这只会影响缓存层次结构，而您似乎没有使用缓存层次结构。
如果您想要控制缓存，那么正确的配置选项是cache（或no_cache，取决于您正在运行的 squid 版本）。
例如
Acl dontcache dstdomain .cnn.com
Cache deny dontcache
Cache allow all
答案2
Squid 指令总是直接表示对于指定的 ACL，始终直接连接到它们，并且从不连接到上游缓存。许多过滤代理都设置为上游缓存，因此过滤器不必担心缓存（它将缓存委托给 Squid）。
你的例子
acl allow_domains dstdomain www.cnn.com
always_direct allow allow_domains
定义一个名为的访问控制列表allow_domains，并将 www.cnn.com 添加到其中。（您可能还想将其更改为，以.cnn.com允许其他 CNN 网站，但不仅仅是带有该后缀的任何网站，例如“malwarecnn.com”）。
然后，always_direct allow ACL_NAME 将告诉 Squid 忽略该域的转发器。
（如果您回答自己的问题，请以答案的方式回答。否则，有人会来为未来的读者添加更多细节。:)
答案3
总是直接用于指定应该总是由 Squid 转发到原始服务器无需使用任何对等点。这与缓存无关。您必须使用类似下面的代码来代替 always_direct
acl bypass_caching dstdomain cnn.com
cache deny bypass_caching
TAG：缓存 - ACL 元素列表，如果匹配，则会导致请求无法从缓存中得到满足，并且回复不会被缓存。换句话说，使用它来强制某些对象永远不会被缓存。您必须使用单词“DENY”来指示 ACL 名称不应被缓存。