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A fault-tolerant architectural approach for dependable systems

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3 Author(s)
de Lemos, Rogerio ; Comput. Lab., Kent Univ., Canterbury, UK ; de Castro Guerra, P.A. ; Rubira, C.M.F.

A system's structure enables it to generate its intended behavior from its components' behavior. A well-structured system simplifies relationships among components, which can increase dependability. With software systems, the architecture is an abstraction of the structure. Architectural reasoning about dependability has become increasingly important because emerging applications are increasingly complex. We've developed an architectural approach for effectively representing and analyzing fault-tolerant software systems. The proposed solution relies on exception handling to tolerate faults associated with component and connector failures, architectural mismatches, and configuration faults. Our approach, a specialization of the peer-to-peer architectural style, hides inside the architectural elements the complexities of exception handling and propagation. Our goal is to improve a system's overall reliability and availability by making it tolerant of nonmalicious faults.

Published in:

Software, IEEE  (Volume:23 ,  Issue: 2 )