Optimistic recovery in a distributed processing system
Patent 4665520 Issued on May 12, 1987. Estimated Expiration Date: 
February 1, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 1, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3517171 3692989 3768074 3775566 3786430 Method and system for the iterative and simultaneous comparison of data with a group of reference data items Fault handler for a multiple computer system Fault-tolerant multi-computer system Automatic fault recovery system for a multiple processor telecommunications switching control Asynchronous channel error mechanism InventorsApplicationNo. 06/697536 filed on 02/01/1985US Classes:714/15State recovery (i.e., process or data file)ExaminersPrimary: Fleming, Michael R.Attorney, Agent or FirmInternational ClassG06F 11/14 (20060101)AbstractIn a distributed system whose state space is partitioned into recovery units, wherein recovery units communicate by the exchange of messages and wherein a message received by a recovery unit may causally depend on other recovery units having received prior messages, a method of recovering from failure of any number of recovery units in the system comprising the steps of: (a) tracking the dependency of each message received by a recovery unit in terms of the causative messages received by other recovery units in the system; and (b) restoring all recovery units to a consistent system-wide state after recovery unit failure by means of the tracked message dependencies.Other References
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