Just a small one-liner to monitor traffic going through varnish. Hits and misses are coloured to you can easily see what goes to your backend and what doesn’t. Bot traffic is also coloured 🙂

varnishncsa -F '%s %h %{Varnish:hitmiss}x %D %l %u %t "%r" %b "%{User-agent}i"' | GREP_COLOR='01;31' egrep --line-buffered --color=always 'miss|
 | GREP_COLOR='01;32' egrep --line-buffered --color=always 'hit|
 | GREP_COLOR='01;33' egrep --line-buffered --color=always '^.*css.*$|^.*\/img.*$|^.*font.*$|^.*js.*$|
 | GREP_COLOR='01;35' egrep --line-buffered --color=always '^.*bot.*$|