Clean Architecture
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Clean Architecture : A Craftsman's Guide to Software Structure and Design

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Description

Building upon the success of best-sellers The Clean Coder and Clean Code, legendary software craftsman Robert C. "Uncle Bob" Martin shows how to bring greater professionalism and discipline to application architecture and design.



As with his other books, Martin's Clean Architecture doesn't merely present multiple choices and options, and say "use your best judgment": it tells you what choices to make, and why those choices are critical to your success. Martin offers direct, no-nonsense answers to key architecture and design questions like:



What are the best high level structures for different kinds of applications, including web, database, thick-client, console, and embedded apps?
What are the core principles of software architecture?
What is the role of the architect, and what is he/she really trying to achieve?
What are the core principles of software design?
How do designs and architectures go wrong, and what can you do about it?
What are the disciplines and practices of professional architects and designers?

Clean Architecture is essential reading for every software architect, systems analyst, system designer, and software manager -- and for any programmer who aspires to these roles or is impacted by their work.
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Pearson Programming and Web Development

Product details

  • Paperback | 432 pages
  • 175 x 231 x 23mm | 660g
  • Pearson
  • United States
  • English
  • 0134494164
  • 9780134494166
  • 2,606

Table of contents

Foreword xv

Preface xix

Acknowledgments xxiii

About the Author xxv







Part I: Introduction 1



Chapter 1: What Is Design and Architecture? 3



The Goal? 4

Case Study 5

Conclusion 12



Chapter 2: A Tale of Two Values 13

Behavior 14

Architecture 14

The Greater Value 15

Eisenhower's Matrix 16

Fight for the Architecture 18





Part II: Starting with the Bricks: Programming Paradigms 19



Chapter 3: Paradigm Overview 21



Structured Programming 22

Object-Oriented Programming 22

Functional Programming 22

Food for Thought 23

Conclusion 24



Chapter 4: Structured Programming 25

Proof 27

A Harmful Proclamation 28

Functional Decomposition 29

No Formal Proofs 30

Science to the Rescue 30

Tests 31

Conclusion 31



Chapter 5: Object-Oriented Programming 33

Encapsulation? 34

Inheritance? 37

Polymorphism? 40

Conclusion 47



Chapter 6: Functional Programming 49

Squares of Integers 50

Immutability and Architecture 52

Segregation of Mutability 52

Event Sourcing 54

Conclusion 56





Part III: Design Principles 57



Chapter 7: SRP: The Single Responsibility Principle 61



Symptom 1: Accidental Duplication 63

Symptom 2: Merges 65

Solutions 66

Conclusion 67



Chapter 8: OCP: The Open-Closed Principle 69

A Thought Experiment 70

Directional Control 74

Information Hiding 74

Conclusion 75



Chapter 9: LSP: The Liskov Substitution Principle 77

Guiding the Use of Inheritance 78

The Square/Rectangle Problem 79

LSP and Architecture 80

Example LSP Violation 80

Conclusion 82



Chapter 10: ISP: The Interface Segregation Principle 83

ISP and Language 85

ISP and Architecture 86

Conclusion 86



Chapter 11: DIP: The Dependency Inversion Principle 87

Stable Abstractions 88

Factories 89

Concrete Components 91

Conclusion 91





Part IV: Component Principles 93



Chapter 12: Components 95



A Brief History of Components 96

Relocatability 99

Linkers 100

Conclusion 102



Chapter 13: Component Cohesion 103

The Reuse/Release Equivalence Principle 104

The Common Closure Principle 105

The Common Reuse Principle 107

The Tension Diagram for Component Cohesion 108

Conclusion 110



Chapter 14: Component Coupling 111

The Acyclic Dependencies Principle 112

Top-Down Design 118

The Stable Dependencies Principle 120

The Stable Abstractions Principle 126

Conclusion 132





Part V: Architecture 133



Chapter 15: What Is Architecture? 135



Development 137

Deployment 138

Operation 138

Maintenance 139

Keeping Options Open 140

Device Independence 142

Junk Mail 144

Physical Addressing 145

Conclusion 146



Chapter 16: Independence 147

Use Cases 148

Operation 149

Development 149

Deployment 150

Leaving Options Open 150

Decoupling Layers 151

Decoupling Use Cases 152

Decoupling Mode 153

Independent Develop-ability 153

Independent Deployability 154

Duplication 154

Decoupling Modes (Again) 155

Conclusion 158



Chapter 17: Boundaries: Drawing Lines 159

A Couple of Sad Stories 160

FitNesse 163

Which Lines Do You Draw, and When Do You Draw Them? 165

What About Input and Output? 169

Plugin Architecture 170

The Plugin Argument 172

Conclusion 173



Chapter 18: Boundary Anatomy 175

Boundary Crossing 176

The Dreaded Monolith 176

Deployment Components 178

Threads 179

Local Processes 179

Services 180

Conclusion 181



Chapter 19: Policy and Level 183

Level 184

Conclusion 187



Chapter 20: Business Rules 189

Entities 190

Use Cases 191

Request and Response Models 193

Conclusion 194



Chapter 21: Screaming Architecture 195

The Theme of an Architecture 196

The Purpose of an Architecture 197

But What About the Web? 197

Frameworks Are Tools, Not Ways of Life 198

Testable Architectures 198

Conclusion 199



Chapter 22: The Clean Architecture 201

The Dependency Rule 203

A Typical Scenario 207

Conclusion 209



Chapter 23: Presenters and Humble Objects 211

The Humble Object Pattern 212

Presenters and Views 212

Testing and Architecture 213

Database Gateways 214

Data Mappers 214

Service Listeners 215

Conclusion 215



Chapter 24: Partial Boundaries 217

Skip the Last Step 218

One-Dimensional Boundaries 219

Facades 220

Conclusion 220



Chapter 25: Layers and Boundaries 221

Hunt the Wumpus 222

Clean Architecture? 223

Crossing the Streams 226

Splitting the Streams 227

Conclusion 228



Chapter 26: The Main Component 231

The Ultimate Detail 232

Conclusion 237



Chapter 27: Services: Great and Small 239

Service Architecture? 240

Service Benefits? 240

The Kitty Problem 242

Objects to the Rescue 244

Component-Based Services 245

Cross-Cutting Concerns 246

Conclusion 247



Chapter 28: The Test Boundary 249

Tests as System Components 250

Design for Testability 251

The Testing API 252

Conclusion 253



Chapter 29: Clean Embedded Architecture 255

App-titude Test 258

The Target-Hardware Bottleneck 261

Conclusion 273





Part VI: Details 275



Chapter 30: The Database Is a Detail 277



Relational Databases 278

Why Are Database Systems So Prevalent? 279

What If There Were No Disk? 280

Details 281

But What about Performance? 281

Anecdote 281

Conclusion 283



Chapter 31: The Web Is a Detail 285

The Endless Pendulum 286

The Upshot 288

Conclusion 289



Chapter 32: Frameworks Are Details 291

Framework Authors 292

Asymmetric Marriage 292

The Risks 293

The Solution 294

I Now Pronounce You ... 295

Conclusion 295



Chapter 33: Case Study: Video Sales 297

The Product 298

Use Case Analysis 298

Component Architecture 300

Dependency Management 302

Conclusion 302



Chapter 34: The Missing Chapter 303

Package by Layer 304

Package by Feature 306

Ports and Adapters 308

Package by Component 310

The Devil Is in the Implementation Details 315

Organization versus Encapsulation 316

Other Decoupling Modes 319

Conclusion: The Missing Advice 321





Part VII: Appendix 323




Appendix A Architecture Archaeology 325





Index 375
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About Robert Martin

Robert C. Martin ("Uncle Bob") has been a programmer since 1970. He is founder of Uncle Bob Consulting, LLC, and cofounder with his son Micah Martin of The Clean Coders LLC. Martin has published dozens of articles in various trade journals and is a regular speaker at international conferences and trade shows. He has authored and edited many books, including: Designing Object Oriented C++ Applications Using the Booch Method, Patterns Languages of Program Design 3, More C++ Gems, Extreme Programming in Practice, Agile Software Development: Principles, Patterns, and Practices, UML for Java Programmers, Clean Code, and The Clean Coder. A leader in the industry of software development, Martin served for three years as editor-in-chief of the C++ Report, and he served as the first chairman of the Agile Alliance.
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Rating details

3,765 ratings
4.24 out of 5 stars
5 45% (1,688)
4 38% (1,441)
3 13% (492)
2 3% (125)
1 1% (19)
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