In this chapter, we have discussed the clustering of Tomcat 7 and its implementation techniques. We have discussed clustering architecture, horizontal and vertical clusters and their benefits, the implementation of horizontal and vertical clustering on Tomcat 7, and the verification of clusters.

In the next chapter, we will discuss the most awaited topic of Tomcat 7, that is, Tomcat 6 upgrade to Tomcat 7 and different techniques used during the upgrade.