arc42 by Example
arc42 by Example
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arc42 by Example

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Completed on 2017-01-25

About the Book

This book contains several real-world software architectures, documented with the practical arc42 template.

You will learn about the inner workings of a chess engine, a huge CRM system, a cool web system to track biking activities and an extremely small menu-bar application.

Each of the examples starts with a brief description of the problem domain, including the quality requirements, before we explain the system context with all the external interfaces. Then we dive into an overview of the solution strategy to prepare you for the implementation building blocks and runtime scenarios (as major architectural views).

Later on we explain the crosscutting concepts of every architecture and its implementation.

You will learn that documentation can be compact, helpful and easy-to-read.

About the Authors

Gernot Starke
Gernot Starke

Dr. Gernot Starke (INNOQ Fellow) is co-founder and longstanding user of the (open source) arc42 documentation template. For more than 20 years he works as software-architect, coach and consultant, conquering the challenges of creating effective software architectures for clients from various industries.

Gernot co-founded the International Software Architecture Qualification Board (iSAQB e.V.) and the (open source) Architecture Improvement Method (

Gernot has authored several (German) books on software architecture and related topics.

Michael Simons
Michael Simons

Michael Simons is a father of two, husband, geek, programmer and passionate cyclist. He works as a Senior Software engineer for Neo4j. In a previous life he worked at ENERKO INFORMATIK, an Aachen based company dealing with GIS system and has a background focussed on geographic information systems for utilities and price calculation at the energy market. In his brief time at INNOQ he helped customers modernize their application systems. Michael is known for having a certain passion for SQL and Spring.

Michael took his apprenticeship at the FZ Jülich and studies at FH Aachen: Campus Jülich. He is a PRINCE2 ® Registered Practitioner and sometimes torn between the roles of an architect and project manager.

Michael is a dedicated blogger and engaged in various open source projects, you'll find his stuff at

Stefan Zörner
Stefan Zörner

From the Bayer AG via IBM and oose to embarc. Stefan Zörner represents twenty years of experience in IT and still looks forward excitedly. He supports clients in solving architecture and implementation issues. In vivid workshops he demonstrates practical design tools and spreads enthusiasm for real architecture work.

Bundles that include this book

arc42 by Example
Communicating Software Architectures with arc42
2 Books
Suggested Price
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About the Contributors

Peter Hruschka
Peter Hruschka


Table of Contents

  • Preface
    • Acknowledgements
    • Conventions
    • Disclaimer
  • I - Introduction
    • I.1 What is arc42?
    • I.2 Why this Book?
    • I.3 What this Book is Not
    • I.4 Overview of the Examples
    • I.5 Table of arc42 Topics
  • II. HTML Sanity Checking
    • II.1. Introduction and Goals
    • II.2 Constraints
    • II.3 Context
    • II.4 Solution Strategy
    • II.5 Building Block View
    • II.6 Runtime View
    • II.7 Deployment view
    • II.8 Crosscutting Concepts
    • II.9 Design Decisions
    • II.10 Quality Scenarios
    • II.11 Risks and technical debt
    • II.12 Glossary
  • III - Mass Market Customer Relationship Management
    • III.1 Introduction and Requirements
    • III.2 Constraints
    • III.3 Context
    • III.4 Solution Strategy
    • III.5 Building Blocks
    • III.6 Runtime View
    • III.7 Deployment View
    • III.8 Technical and Crosscutting Concepts
    • III.9 Architecture Decisions
    • III.10 Quality Scenarios
    • III.11 Risks
    • III.12 Glossary
  • IV - biking2
    • IV.1 Introduction and Requirements
    • IV.2 Constraints
    • IV.3 Context
    • IV.4 Solution Strategy
    • IV.5 Building Blocks
    • IV.6 Runtime View
    • IV.7 Deployment View
    • IV.8 Technical and Crosscutting Concepts
    • IV.9 Architecture Decisions
    • IV.10 Quality Scenarios
    • IV.11 Risks
    • IV.12 Glossary
  • V - DokChess
    • V.1 Introduction and Requirements
    • V.2 Constraints
    • V.3 Context
    • V.4 Solution Strategy
    • V.5 Building Block View
    • V.6 Runtime View
    • V.7 Deployment View
    • V.8 Technical and Crosscutting Concepts
    • V.9 Design Decisions
    • V.10 Quality Scenarios
    • V.11 Risks
    • V.12 Glossary
  • VI - Mac-OS Menubar Application
  • The Authors
    • Gernot Starke
    • Michael Simons
    • Stefan Zörner
    • Contacting the Authors
  • Further Reading
  • Notes

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