Can I Have a Do-over?
The ability to undo an operation is also a fundamental area the Stanford and Berkeley team is working in. Undo also serves as a basic mechanism in any transaction processing system to ensure that an operation either completes or does not commit. To demonstrate a general approach, the Berkeley team is working on an undo capability for email systems. They have recently completed the prototype of an email system featuring an operator undo utility.
Suppose a virus infects a conventional email storage server. The system operator must disinfect the server, which is a laborious job. This system, however, records all the server's activities automatically, including discarded messages. If the system is infected, the operator could ...
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