Chapter 9. Clustering in Tomcat 7

I would like to start this topic with a story. There were two teams; A and B, in an IT organization, managing different systems. Both teams consisted of highly qualified experts in middleware. One day, the CEO of that organization called a meeting for both teams, stating that they had to manage two different middleware environments, one middleware environment was individually assigned to teams A and B. Each team had to follow their own approaches to fix the environmental issues. After 3 months, each client performed a process review and the results surprised the higher management. Team A had maintained 50 percent uptime for the application and Team B had maintained 99 percent uptime for the application hosted in their environment. While comparing the approaches followed by each team, it was found that Team B had followed a high availability architecture using clustering while Team A had followed a single-server architecture.

In mid-year, the management announced...