Round-Robin (org.jboss.ha.framework.interfaces.RoundRobin): each call is dispatched to a new node. The first target node is randomly selected from the list.

First Available (org.jboss.ha.framework.interfaces.FirstAvailable): one of the available target nodes is elected as the main target and is used for every call: this elected member is randomly chosen from the list of members in the cluster. When the list of target nodes changes (because a node starts or dies), the policy will re-elect a target node unless the currently elected node is still available. Each client-side interceptor or load balancer elects its own target node independently of the other proxies.