1. A computer program product comprising a computer readable storage medium having a computer readable program stored therein, wherein the computer readable program, when executed on a data processing system, causes the data processing system to: determine whether a locally cached copy of a shared resource is present in a local cache memory of the data processing system; determine, in response to a determination that a locally cached copy of the shared resource is present in the local cache memory, whether the locally cached copy of the shared resource is a latest version of the shared resource; and in response to determining that that locally cached copy of the shared resource is a latest version of the shared resource: perform a write operation on the locally cached copy of the shared resource to generate an updated locally cached copy of the shared resource; and transmit a cluster event notification to other data processing systems of a cluster indicating the shared resource was written to and identifying which data processing system in the cluster performed the write operation, wherein the cluster event notification is logged in at least one change log data structure associated with the other data processing systems.