we had tested litespeed trial ( 2 cpu + enabled public or private cache) in lab environment without any extra caching . and we got a lot of 500 and 400 request in performance test used by ( ab or http performance testing tool ) but when we decide to put nginx as reverse proxy and port php requests to litespeed and keep static files served by nginx , it's working fine ! i mean perfect about 2000 request/second served without any error . is there any way to integrate litespeed with any other caching plugin ? like varnish in frontend i saw reports that published before with a lot numbers in this forum ,but i need a little more exprience here . also is it safe to put some reverse proxy in middle of litespeed ?