Using the API, What are the best practices for accessing a cluster by the cluster name?

We have a WIN2016 Cluster of three BOBJ 4.1 SP10 machines.

Our users access the Launchpad through our application without the traditional login, but are currently limited to a static system name for connection.

I see all kinds of simple code snippets for accessing the application the way it currently works. I am just looking for the best method to implement the use of the @BOBJCLUSTERNAME so that if one of the servers goes down for any reason the cluster can still answer calls.