Clusters, Instances, Load Balancers, and Sessions

Clusters, server instances, load balancers, and sessions are related as follows in the Application Server:

The cluster thus acts as a safe boundary for session failover for the server instances within the cluster. It is possible to use the load balancer and upgrade components within the Application Server without loss of service. For more information, see "Using Multiple Clusters for Online Upgrades Without Loss of Service".


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