Software Debugging and Maintenance: Practical Methods for Finding Errors, Unders

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Software Debugging and Maintenance by Nathan Westwood

Learn how to find the real cause of software failures - and fix problems without creating new rarely fails with a clear explanation.A customer sees an incorrect calculation.
An application returns an unexpected error.
A service works in development but fails after deployment.
A system becomes slower over time without an obvious visible problem is only the starting debugging requires moving from symptoms to evidence, from evidence to understanding, and from understanding to a verified Debugging and Maintenance provides a practical, evidence-driven approach to diagnosing failures, improving code, and maintaining real-world this comprehensive guide, you will learn how to: Develop a structured debugging mindset instead of relying on guessworkUnderstand the difference between symptoms, failures, defects, errors, and root causesDefine expected versus actual behavior before investigatingReproduce failures and create minimum reproducible casesCollect meaningful evidence from logs, traces, metrics, requests, versions, and configurationsRead error messages and stack traces without confusing symptoms for causesUse debugging tools, breakpoints, stepping, watches, and state inspection effectivelyIsolate failures by reducing variables and testing controlled hypothesesPerform root-cause analysis using evidence-backed reasoningDebug incorrect output, missing values, authentication problems, database failures, API errors, and configuration issuesInvestigate concurrency problems, race conditions, deadlocks, memory leaks, and resource exhaustionDiagnose performance bottlenecks using measurement instead of intuitionDebug databases, web applications, browser behavior, caches, sessions, and distributed systemsCompare environments and identify deployment-related failuresUse version history and Git techniques to locate regressionsApply safe fixes and design effective regression protectionMaintain legacy applications and manage technical debtPerform production debugging and incident investigation responsiblyThis book teaches a repeatable debugging workflow: Observe → Reproduce → Collect Evidence → Form a Hypothesis → Isolate → Test the Hypothesis → Apply a Controlled Fix → Verify → Regression Test → DocumentYou will learn why experienced engineers do not immediately change code when something breaks. A stack trace may show where a failure became visible but not where the problem originated. A timeout may reveal that something exceeded a limit without identifying the actual bottleneck. A deployment issue may come from configuration, permissions, dependencies, or environment differences rather than application book also explains how debugging skills support long-term maintenance. Applications spend much of their lives being modified, upgraded, and extended. Effective maintenance requires understanding existing behavior, preserving important contracts, reducing technical debt, managing dependencies, and making controlled practical workshops, fictional case studies, debugging worksheets, decision guides, and real engineering scenarios, this guide helps you develop the problem-solving skills required to handle complex software you are a software developer, QA engineer, DevOps professional, system engineer, computer science student, or technology professional responsible for applications, Software Debugging and Maintenance will help you become better at diagnosing problems and delivering safer guessing at failures. Learn how professional engineers investigate, fix, and improve software.

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Paperback CONDITION
Brand New Details ISBN Author Nathan Westwood Pages 164 Publisher Independently Published Year 2026 ISBN-13 9798175049597 Format Paperback Publication Date 2026-09-17 Imprint Independently Published Subtitle Practical Methods for Finding Errors, Understanding Failures, Improving Code, and Maintaining Applications Audience General Country of Origin US Product Class Description Computing: Professional & Programming
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