varnish 常用命令--不断更新

$ varnishadm -T 127.0.0.1:2000  help 

help [command]
ping [timestamp]
status
start
stop
stats
vcl.load <configname> <filename>
vcl.inline <configname> <quoted_VCLstring>
vcl.use <configname>
vcl.discard <configname>
vcl.list
vcl.show <configname>
param.show [-l] [<param>]
param.set <param> <value>
quit
purge.url <regexp>
purge.hash <regexp>
purge <field> <operator> <arg> [&& <field> <oper> <arg>]...
purge.list

清除所有缓存：purge.url *$
清除文件夹下缓存：pur.url ^/files/.*$
清除某个后端的某些缓存：purge req.http.host == izhoufeng.com && req.url ~ ^/somedirectory/.*$