Hello I need your opinion about the best caching that i can use for Nginx for a huge forum. Can i use something like memcache or varnish or something else and which one do you thing is better? Thank you
I highly recommend you varnish for caching, its absolutely the best choice, also you can use multi cores and multiple processes with it, better performance for everything related to caching.
Varnish has my vote too. We personally evaluate the situation and then decided what the best choice of action is as we have found each to work better in different situations.