Lean Architecture

By Josephine Hayes,2014-07-29 11:32
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Lean Architecture

Table of Contents


    Title Page

    Copyright Page


    Acknowledgements About the Authors Preface

    ? CHAPTER 1 - Introduction

    ? 1.1 The Touchstones: Lean and Agile 1.2 Lean Architecture and Agile Feature Development 1.3 Agile Production 1.4 The Book in a Very Small Nutshell 1.5 Lean and Agile: Contrasting and Complementary 1.6 Lost Practices 1.7 What this Book is Not About 1.8 Agile, Lean — Oh, Yeah, and Scrum and Methodologies and Such 1.9 History and Such

    ? CHAPTER 2 - Agile Production in a Nutshell

    ? 2.1 Engage the Stakeholders 2.2 Define the Problem 2.3 Focusing on What the System Is: The Foundations of Form 2.4 Focusing on What the System Does: The System Lifeblood 2.5 Design and Code 2.6 Countdown: 3, 2, 1 ...

    ? CHAPTER 3 - Stakeholder Engagement

    ? 3.1 The Value Stream 3.2 The Key Stakeholders 3.3 Process Elements of Stakeholder Engagement 3.4 The Network of Stakeholders: Trimming Wasted Time 3.5 No Quick Fixes, but Some Hope

    ? CHAPTER 4 - Problem Definition

    ? 4.1 What’s Agile about Problem Definitions?

    4.2 What’s Lean about Problem Definitions? 4.3 Good and Bad Problem Definitions 4.4 Problems and Solutions 4.5 The Process Around Problem Definitions 4.6 Problem Definitions, Goals, Charters, Visions, and Objectives 4.7 Documentation?

    ? CHAPTER 5 - What the System Is, Part 1: Lean Architecture

    ? 5.1 Some Surprises about Architecture 5.2 The First Design Step: Partitioning 5.3 The Second Design Step: Selecting a Design Style 5.4 Documentation? 5.5 History and Such

    ? CHAPTER 6 - What the System Is, Part 2: Coding It Up

    ? 6.1 The Third Step: The Rough Framing of the Code 6.2 Relationships in Architecture 6.3 Not Your Old Professor’s OO 6.4 How much Architecture? 6.5 Documentation? 6.6 History and Such

    ? CHAPTER 7 - What the System Does: System Functionality

    ? 7.1 What the System Does 7.2 Who is Going to Use Our Software? 7.3 What do the Users Want to Use Our Software for? 7.4 Why Does the User Want to Use Our Software? 7.5 Consolidation of What the System Does 7.6 Recap 7.7 “It Depends”: When Use Cases are a Bad Fit 7.8 Usability Testing 7.9 Documentation? 7.10 History and Such


    CHAPTER 8 - Coding It Up: Basic Assembly

    ? 8.1 The Big Picture: Model-View-Controller-User 8.2 The Form and Architecture of Atomic Event Systems 8.3 Updating the Domain Logic: Method Elaboration, Factoring, and Re-factoring 8.4 Documentation? 8.5 Why All These Artifacts? 8.6 History and Such

    ? CHAPTER 9 - Coding it Up:The DCI Architecture

    ? 9.1 Sometimes, Smart Objects Just Aren’t Enough 9.2 DCI in a Nutshell 9.3 Overview of DCI 9.4 DCI by Example 9.5 Updating the Domain Logic 9.6 Context Objects in the User Mental Model: Solution to an Age-Old Problem 9.7 Why All These Artifacts? 9.8 Beyond C++: DCI in Other Languages 9.9 Documentation? 9.10 History and Such

    ? CHAPTER 10 - Epilog

    ? APPENDIX A - Scala Implementation of the DCI Account Example APPENDIX B - Account Example in Python APPENDIX C - Account Example in C# APPENDIX D - Account Example in Ruby APPENDIX E - Qi4j APPENDIX F - Account Example in Squeak Bibliography Index

This edition first published 2010 ? 2010 James Coplien and Gertrud Bjørnvig


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    Reprinted with corrections December 2010


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    Quotes from The Clock of the Long Now: Time and Responsibility — The Ideas Behind the

     Computer are Copyright ? 2000 Stewart Brand. World’s Slowest




    ? A catalogue record for this book is available from the British Library.

    ? ISBN 978-0-470-68420-7

    ? Typeset in 11/13 Palatino by Laserwords Private Limited, Chennai, India.


To Trygve Mikkjel Heyerdahl Reenskaug, also a grandfather

Publisher’s Acknowledgments

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VP Consumer and Technology Publishing Director: Michelle Leete

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About the Authors

    Gertrud Bjørnvig is an agile requirements expert with over 20 years’ experience in systemdevelopment. She is a co-founder of the Danish Agile User Group and is a partner in ScrumTraining Institute.

    Jim Coplien is a software industry pioneer in object-oriented design, architecture patterns,and agile software development. He has authored several books on software design and agilesoftware development, and is a partner in the Scrum Training Institute.

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