The folks at Jelastic have published an excellent article about how to deploy ContentBox in their Jelastic Cloud and scale it for distribution.  Here is the article as well:

Introduction

Today we’ll show you how to deploy ContentBox to the Jelastic Cloud. In this deployment, ContentBox is powered by Railo, an open source CFML engine that can be deployed to any Java Servlet Container. Moreover, you’ll see how to use its embedded Railo CFML cluster cache by the Memcached implementation and how it can help to create a fast and scalable caching layer for ContentBox.

In our case, the clustered cache offers shared session storage for all servers in a cluster. You can then store all the sessions in this cache that are available from all servers in the cluster. In other words, we’ll use Memcached for session replication. So let’s take an easy example.