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• We have discussed the basic issues of dependable systems before. • Now we will focus more on survivability-related issues of the aforementioned paper • Most of the material is directly taken from the paper and (to avoid visual clutter) will not be explicitly cited! BASICS
This paper surveys the various problems involved in achieving very high rehability from complex computing systems, and discusses the relatmnship between system structurmg techniques and techniques of fault tolerance. Topics covered mclude: 1) protective redundancy in hardware and software; 2) the use of atomic actmns to structure the activity of a system to(More)
Dependability: ability to deliver service that can justifiably be trusted Service delivered by a system: its behavior as it is perceived by its user(s) User: another system that interacts with the former Function of a system: what the system is intended to do (Functional) Specification: description of the system function Correct service: when the delivered(More)
We address the problem of how to handle exceptions in distributed object-oriented systems. In a distributed computing environment exceptions may be raised simultaneously and thus need to be treated in a coordinated manner. We take two kinds of concurrency into account: 1) several objects are designed collectively and invoked concurrently to achieve a global(More)