Software Reliability Engineering Review

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(More customer reviews)This book takes Mr. Musa's out-of-print classic, Software Reliability: Measurement, Prediction, Application, to the next level. Where his first book spawned an entire body of knowledge and approach to software reliability, this one adds a structured process and extends the foundation provided by the original book into a discipline that is practiced by mature organizations.
The process, called SRET or software reliability engineered testing, is six-step model comprised of the following steps:
(1) List associated systems - includes base products and variations to identify scope and coverage.
(2) Develop operational profiles - break the system down into logical tasks and rate of occurrence (expressed as probabilities)
(3) Define "just right" reliability - this is the tough part and is thoroughly covered. The essential elements of this step include: determining failure (discrepancy between system behavior and user requirements) and faults (system implementation defects that trigger failures). You next determine the "just right" level of reliability by determining a strategy for measuring failure intensities. This is done by computing a failure intensity objective (FIO) for each system. Brush up on probability and statistics for this step because it is performed using hard quantitative methods.
(4) Prepare for testing - this is the traditional approach employing a test plan and associated test cases, with a distinct difference: the test cases are tied to operational profiles, breaking down a complex process into manageable elements. The more complex the software being tested the more manageable the test process becomes using this structured approach.
(5) Execute test - the book provides detailed information on product testing (also known as user acceptance testing and called "feature testing" in this book), load and regression testing. This full suite of testing types is excellent and shows the detail with which Mr. Musa approaches reliability and quality.
(6) Guide test - this final step in the SRET covers both test and release management. There is much more to this step than simple test management, it also covers continuous metrics gathering and failure prediction.
Also included are a chapter on software reliability models and a template for deploying SRET.
This book differs from Mr. Musa's earlier book in one significant way: it transforms the theoretical approach given in Software Reliability: Measurement, Prediction, Application into a practical approach that can be implemented as a process. The core material from the first book is included in this one, with refinements that have evolved since Mr. Musa's 1987 classic. It merits 5 stars and is essential reading for developers and SQA professionals who design and build mission- or safety-critical applications.

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The first practical guide to Software Reliability Engineering (SRE), this book puts the efficiency-enhancing benefits of SRE within reach of all software developers and testers. Organized for quick learning and rapid application, this book leads you through the entire SRE process with the Fone Follower case study, adapted from a Bell Laboratories product. With answered FAQs, hands-on exercises for instant application, and information-packed appendices, the book boils down the core practice of SRE to a one- or two-day learning process. Even those unfamiliar with SRE can quickly discover how to set quantitative reliability goals, use CASRE to estimate software reliability, develop operational profiles, prepare test cases, execute tests, interpret failure data, and much more. Also helpful to systems engineers, systems architects, developers, and managers, this unique and valuable tool shows you step-by-step how to deliver the highly efficient engineered software development and testing procedures needed in today's fast-moving marketplace.

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