Secure API Manager supports high availability and load balancing with the use of an L4 switch. You must install and deploy an L4 switch for the API Gateway. Ensure that you use session persistence in the L4 switch so users do not have to log in again if there is a disruption.
Clustering the API Gateway facilitates the API authorizations by load balancing the authorizations to the different nodes in the cluster and providing a backup of the APIs in case of a disaster or hardware failure.