Nginx (engine x) is a high performance lightweight HTTP server, more and more sites are using nginx, according to Netcraft survey (http://news.netcraft.com/archives/2013/11/01/november-2013-web-server-survey.html), nginx powers 15% of the busies sites in November 2013.
Nginx installation is very straight forward, we can download latest source code from http://nginx.org/en/download.html or point our yum source to http://nginx.org/packages/OS/OSRELEASE/$basearch/ and install using yum.
Replace “OS” with “rhel” or “centos”, depending on the distribution used, and “OSRELEASE” with “5” or “6”, for 5.x or 6.x versions, respectively.
So for CentOS 6.3, we can point our YUM source to: http://nginx.org/packages/centos/6/$basearch/