Use varnish in front of apache. Why not nginx, lighttpd? Because apache has market share - there's modules for nearly everything. Going farther off the beaten p

Use varnish in front of apache. Why not nginx, lighttpd? Because apache has market share - there's modules for nearly everything. Going farther off the beaten path will just turn into a headache as you'll eventually want/need functionality offered by a application with a larger market share.