CF doesn't cache html by default. You have to add a page rule to do it. If your html being dynamically generated is most of your load (it probably is, even if i

CF doesn't cache html by default. You have to add a page rule to do it. If your html being dynamically generated is most of your load (it probably is, even if it's not most of your bandwidth—serving plain files with Apache or Nginx or whatever is incredibly cheap, processor-wise) this means CF doesn't help much unless you tell it to.