In the previous article, I set up a cluster of 2 Tomcat instances in order to achieve load-balacing. It also offered failover capability. However, when using this feature, the user session was lost when changing node. In this article, I will show you how this side-effect can be avoided. Reminder: the HTTP protocol is inherently disconnected (as opposed to FTP which is connected). In HTTP, the client sends a request to a server, it gets its response and that’s the end.