MySQL Cluster

MySQL Cluster: Two webserver setup
http://dev.mysql.com/tech-resources/articles/mysql-cluster-for-two-servers.html

Advanced MySQL Replication Techniques
http://dev.mysql.com/tech-resources/articles/advanced-mysql-replication.html

Chapter 16. MySQL Cluster
http://dev.mysql.com/doc/refman/5.0/en/mysql-cluster.html

Getting started with MySQL Proxy
http://dev.mysql.com/tech-resources/articles/proxy-gettingstarted.html

A.14.4. DRBD and MySQL Replication
http://dev.mysql.com/doc/refman/5.1/en/drbd-virtualization.html