nginx - shawfdong/hyades GitHub Wiki
My web server of choice is nginx, written by Igor Sysoev, a Russian software engineer. Nginx focuses on high performance, high concurrency and low memory usage. Unlike the Apache web server that defaults to a threaded or process-oriented approach, nginx uses an asynchronous event-driven approach to handling requests.
Pre-built packages of nginx are available at http://nginx.org/. Instructions are given there on how to set up a yum repository for the RHEL/CentOS distributions.