The Sterling Selling and Fulfillment Foundation HTTP screens are stateful in the sense that a screen preserves state information for subsequent screens. As a result, you have to set up proxy servers or load-balancers to load-balance HTTP requests with a “sticky” load-balancing policy. This ensures HTTP requests go back to the server that have the session states.
Load-balancing can improve performance for large number of HTTP users because the user population is serviced by multiple application servers that are managed as a cluster. Load-balancing can be implemented with a variety of technologies ranging from the Apache proxy servers to hardware-based load balancers.
Please refer to the JBoss documentation (https://access.redhat.com/knowledge/docs/JBoss_Enterprise_Application_Platform) for details to set up HTTP Session replication. Testing was performed with mod_jk and mod_cluster module with sticky session enabled.