Varnish + Apache

gistfile1.txt

1. apt-get install varnish
2. http://www.magentocommerce.com/magento-connect/turpentine-varnish-cache.html
3. insert key nano /etc/varnish/secret +"\n"

varnishlog

DAEMON_OPTS="-a ${VARNISH_LISTEN_ADDRESS}:${VARNISH_LISTEN_PORT} \
             -f ${VARNISH_VCL_CONF} \
             -T ${VARNISH_ADMIN_LISTEN_ADDRESS}:${VARNISH_ADMIN_LISTEN_PORT} \
             -t ${VARNISH_TTL} \
             -w ${VARNISH_MIN_THREADS},${VARNISH_MAX_THREADS},${VARNISH_THREAD_TIMEOUT} \
             -u varnish -g varnish \
             -S ${VARNISH_SECRET_FILE} \
             -s ${VARNISH_STORAGE}
             -p cli_buffer=10000"
             
http://www.transmachina.com/en/knowledge-resources/varnish-caching-memory
http://serverfault.com/questions/108054/does-varnish-require-much-ram
http://www.lullabot.com/blog/article/configuring-varnish-high-availability-multiple-web-servers