| 摘要 |
A method includes providing a first journal and first digest matrix in a first computer, a second journal and second digest matrix in the second computer, the second journal entry indicating a previous modification of an object on a third computer, sending a representation of a previous latest second journal entry, comparing the 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 the second journal entry that is newer than the previous latest second journal entry, adjusting a cache in the first computer according to the first journal, updating the representation, receiving a request for an object, and identifying via the first digest matrix the second computer as a supplier of the object.
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