A.after the subscriber is unavailable for 10 minutes
B.when the subscriber is available
C.after the subscriber is unavailable for after an hour
D.are available until the specified time elapses
E.are expired instantly

A.Ensure the maximum size is increased to an appropriate setting.
B.Set the minimum and maximum size of the connection pool to the same value.
C.Increase the statement cache size.
D.Add more heap to the JVM.
E.Add more nodes to the cluster.