If you decide to use Nginx in addition to Apache, to serve static content, you'll want to install Nginx from source, as most package repositories have a very old version. Some dependencies needed by Nginx:
    
    sudo yum install zlib-devel pcre-devel openssl-devel
    # configure step for Nginx
    ./configure --with-http_ssl_module # use the OpenSSL library

When if installed from source, `configure` will output the list of files related to nginx. They are included in the Appendix below.

Please refer to 'conf/nginx.conf' for a sample config file for Nginx. It will serve static content and proxy all other requests to the Apache instance. This frees up Apache to handle dynamic content, and provides a good performance boost.

## APPENDIX: Nginx files ##

nginx path prefix: "/usr/local/nginx"
nginx binary file: "/usr/local/nginx/sbin/nginx"
nginx configuration prefix: "/usr/local/nginx/conf"
nginx configuration file: "/usr/local/nginx/conf/nginx.conf"
nginx pid file: "/usr/local/nginx/logs/nginx.pid"
nginx error log file: "/usr/local/nginx/logs/error.log"
nginx http access log file: "/usr/local/nginx/logs/access.log"
nginx http client request body temporary files: "client_body_temp"
nginx http proxy temporary files: "proxy_temp"
nginx http fastcgi temporary files: "fastcgi_temp"
nginx http uwsgi temporary files: "uwsgi_temp"
nginx http scgi temporary files: "scgi_temp"