squid proxy

work in progress

• https://twiki.cern.ch/twiki/bin/view/Frontier/InstallSquid
• http://wiki.squid-cache.org/SquidFaq/SquidMemory
• http://www.squid-cache.org/mail-archive/squid-users/200402/att-1071/SQUID.pdf
• http://alpacapowered.wordpress.com/2012/06/21/squid-proxy-optimizations/

example configure options:  '--enable-ssl' '--enable-icap-client' 
'--sysconfdir=/etc/squid' '--enable-async-io' '--enable-snmp' 
'--enable-poll' '--with-maxfd=32768' '--enable-storeio=aufs' 
'--enable-removal-policies=heap,lru' '--enable-epoll' 
'--disable-ident-lookups' '--enable-truncate' 
'--with-logdir=/var/log/squid' '--with-pidfile=/var/run/squid.pid' 
'--with-default-user=squid' '--prefix=/opt/squid' '--enable-auth=basic 
digest ntlm negotiate' 
'-enable-negotiate-auth-helpers=squid_kerb_auth' 
'--with-aufs-threads=32' '--enable-linux-netfilter' 
'--enable-external-acl-helpers' --with-squid=/home/squid/squid-3.1.16 
--enable-ltdl-convenience