public boolean isFailoverOnly() {
        return failoverOnly;
    }
Returns whether this connection should be reserved for failover.
Failover-only connections within a balancing group are only used when
all non-failover connections are unavailable.

@return
    true if this connection should be reserved for failover, false
    otherwise.
extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/apache/guacamole/auth/jdbc/connection/ConnectionModel.java