In my Drupal 6 site (fairly busy about 200 anonymous users on average at at time) I have the following setup to speed up the site.
- Caching Mode - normal
- Gzip enabled via .htaccess
- Cloudflare - normal setting
- Disabled database logging
Can I add memcached or Varnish into this setup? Which one will work better for this site? Should I even care about Varnish and memcached in this setup?