Hi, is there anyone who is using dokuwiki behind cloudflare?
I have, previously.
Any hints how to make use of cloudflare's caching?
Other than gently suggesting you Read Their Fine Manual
? :) No.
Though you don't ask - questions specific to DokuWiki and
Cloudflare are best answered when given (complete) information about your web hosting. mod_cloudflare and apache, distinguishing between cloudflare and server requests in server logs, whether you'll see any improved performance compared to an optimally configured hosting environment except under exceptional loads (no), etc