If a user does not write changed data to a data item while you hold the cast-out lock, you can indicate to the system whether you want to mark the data item as changed or indicate that the system is not to change the status of the data item when you release the lock.

If you indicate that the system is not to change the status of the data item when you release the lock and no other user has updated the data item in the cache while the lock was held, the system is able to reclaim resources from the data item for other requests. If you indicate that the data item is changed when you release the lock or a user has updated the data item while the lock was held, the system considers the data item as changed, and the system cannot reclaim data item resources.