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Planning Extreme Programming Kent Beck Martin Fowler 1 Planning Extreme Programming Kent Beck Martin Fowler Publisher: Addison Wesley First Edition October 12, 2000 ISBN: 0-201-71091-9, 160 pages Front Matter "XP is the most important movement in our field today. I predict that it will Table of Contents be as essential to the present generation as the S.E.I. and its Capability About the Author Maturity Model were to the last." --From the foreword by Tom DeMarco The hallmarks of Extreme Programming--constant integration and automated testing, frequent small releases that incorporate continual customer feedback, and a teamwork approach--make it an exceptionally flexible and effective approach to software development. Once considered radical, Extreme Programming (XP) is rapidly becoming recognized as an approach particularly well-suited to small teams facing vague or rapidly changing requirements--that is, the majority of projects in today’s fast-paced software development world. Within this context of flexibility and rapid-fire changes, planning is critical; without it, software projects can quickly fall apart. Written by acknowledged XP authorities Kent Beck and Martin Fowler, Planning Extreme Programming presents the approaches, methods, and advice you need to plan and track a successful Extreme Programming project. The key XP philosophy: Planning is not a one-time event, but a constant process of reevaluation and course-correction throughout the lifecycle of the project. You will learn how planning is essential to controlling workload, reducing programmer stress, increasing productivity, and keeping projects on track. Planning Extreme Programming also focuses on the importance of estimating the cost and time for each user story (requirement), determining its priority, and planning software releases accordingly. Specific topics include: • Planning and the four key variables: cost, quality, time, and scope • Deciding how many features to incorporate into a release • Estimating scope, time, and effort for user stories • Prioritizing user stories • Balancing the business value and technical risk of user stories • Rebuilding the release plan based on customer and programmer input • Choosing the iteration length 1 • Tracking an iteration • What to do when you’re not going to make the date • Dealing with bugs • Making changes to the team • Outsourcing • Working with business contracts In addition, this book alerts you to the red flags that signal serious problems: customers who will not make decisions, growing defect reports, failing daily builds, and more. An entire chapter is devoted to war stories from the trenches that illustrate the real-world problems many programmers encounter and the solutions they’ve devised. 2 Table of Content Table of Content ............................................................................................................. 3 Foreword......................................................................................................................... 6 Preface............................................................................................................................. 7 Acknowledgments........................................................................................................... 9 Chapter 1. Why Plan? ................................................................................................... 10 Why We Should Plan................................................................................................ 11 What We Need in Planning....................................................................................... 12 The Planning Trap..................................................................................................... 13 Chapter 2. Fear.............................................................................................................. 15 Unacknowledged Fear Is the Source of All Software Project Failures .................... 16 Customer Bill of Rights ............................................................................................ 16 Programmer Bill of Rights........................................................................................ 17 Chapter 3. Driving Software......................................................................................... 18 Chapter 4. Balancing Power ......................................................................................... 21 The Customer............................................................................................................ 22 Finding a Customer................................................................................................... 23 Guiding the Customer............................................................................................... 23 Chapter 5. Overviews.................................................................................................... 25 Top Down ................................................................................................................. 25 Bottom Up................................................................................................................. 26 Chapter 6. Too Much to Do .......................................................................................... 27 Chapter 7. Four Variables............................................................................................. 29 Cost ........................................................................................................................... 29 Quality....................................................................................................................... 30 Time and Scope......................................................................................................... 31 Shopping for Stories ................................................................................................. 31 Chapter 8. Yesterday's Weather.................................................................................... 33 The Story................................................................................................................... 33 How It Works............................................................................................................ 33 Chapter 9. Scoping a Project......................................................................................... 35 Making the Big Plan ................................................................................................. 36 What, Me Worry? ..................................................................................................... 37 Chapter 10. Release Planning ....................................................................................... 39 Who Does Release Planning? ................................................................................... 39 How Stable Is the Release Plan?............................................................................... 40 How Far in Advance Do You Plan? ......................................................................... 40 How Do You Plan Infrastructure? ............................................................................ 41 How Do You Store the Release Plan? ...................................................................... 41 How Much Can You Put into a Release?.................................................................. 41 Release Planning Chapters........................................................................................ 42 Chapter 11. Writing Stories .......................................................................................... 43 Principles of Good Stories ........................................................................................ 43 Feedback from Estimation ........................................................................................ 45 Prioritizing User Stories............................................................................................ 45 3 Traceability ............................................................................................................... 46 Splitting User Stories ................................................................................................ 46 User Story Adornments............................................................................................. 47 The Story Writing Process........................................................................................ 47 When Are You Done Writing Stories? ..................................................................... 48 The Disposition of User Stories................................................................................ 48 Example .................................................................................................................... 48 Chapter 12. Estimation.................................................................................................. 52 Estimating the Size of a Story................................................................................... 52 Estimating How Much You Can Do in an Iteration ................................................. 53 The Meaning of Ideal Time ...................................................................................... 54 Improving Your Estimates........................................................................................ 55 Chapter 13. Ordering the Stories .................................................................................. 57 Business Value.........................................................................................................
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