Patent ID: 6820114
Filing Date: 2004-11-16
Classification: G06F

Abstract:
A computer-implemented method involving a first computer having a cache and at least a second computer; the method comprising:providing a first journal on the first computer, a second journal on the second computer, a first digest matrix of the first computer and a second digest matrix of the second computer, wherein at least one second journal entry indicates a previous modification of an object on a third computer; sending from the first computer to the second computer at least a representation of a previous latest second journal entry referring to the third computer; comparing the at least one representation with a comparable portion of the second journal; if a current latest second journal entry referring to the third computer is newer than the previous latest second journal entry, transmitting from the second journal to the first journal at least each second journal entry that is newer than the previous latest second journal entry and that refers to the third computer; adjusting the cache according to the first journal; updating the at least one representation on the first computer according to the first journal; receiving a request for an object on the first computer; and identifying via the first digest matrix the second computer as a supplier of the object.