[CentOS] Clustering and ha planning

Hello , Centos users: My name is Leandro, I have been using Centos for 4 years and this is the first post in this mail list. I would like to study and introduce myself in clustering and high availability for Centos, currently I have not experience at all about it. I would like to ask about the newest method to achieve high availability , load balancing on linux / Centos. So far I have seen the Clustering docs writen for Centos 5 and the HA documentation from www.linux-ha.org that have been published in 2010. So, I would like to ask to comunity, which are the new methods for clustering and get HA and where to get updated documentation.

Regards, Leandro.