Data Coherence

When a JADE session accesses a JADE object that has been copied into the JADE object cache on a client node, the copy may no longer be current if the object has been updated on another client node. The object will need to be fetched again from the database server node, to bring it up to date.

Automatic cache coherency (discussed in the following section) is a JADE feature that keeps objects in the JADE object cache up to date.

Object locking can also be used to ensure that a JADE object is up to date. When a JADE session has an object locked, its view of the object is guaranteed to be completely up to date.