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Software Architecture and Decision-Making Srinath Perera

Software Architecture and Decision-Making By Srinath Perera

Software Architecture and Decision-Making by Srinath Perera


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Software Architecture and Decision-Making Summary

Software Architecture and Decision-Making: Leveraging Leadership, Technology, and Product Management to Build Great Products by Srinath Perera

Leverage leadership knowledge to make better software architecture decisions. Think deeply but implement slowly.

The overarching goal of software systems (hence, for software architecture) is to build systems that meet quality standards and that provide the highest return on investment (ROI) in the long run or within a defined period of time.

A great product requires a combination of technology, leadership, and product management (including UX). Leadership is primarily about managing uncertainty and making the right judgment. To build great products, technical leaders need to combine technology, leadership, and product management knowledge, and make the right decisions. Many technical mistakes come from the gap between knowledge about these three items and judgment.

In Software Architecture and Decision-Making, Srinath Perera explains principles and concepts that software architects must understand deeply and how to employ those principles to manage uncertainty. The questions and principles discussed in this book help manage uncertainty while building software architecture and provide a framework for making decisions. This book is for all technical leaders in the software industry who make holistic judgments about the systems they build and for future leaders learning the craft.

  • Understand the importance of strong decision making with examples from great technical leaders such as the Wright brothers and Kelly Johnson
  • Leverage five key questions and seven important principles to understand uncertainties during the design process and make strategic architectural decisions
  • Approach the design systematically, first at the macro level and then the individual service level

This definitive guide explains principles and concepts--technical and non-technical alike--that software architects, senior software engineers, and technical leads must understand to manage the inevitable uncertainty involved in building software systems and to drive success of the products for which they are responsible.

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About Srinath Perera

Srinath Perera has been an Apache open source developer for the last 20 years. He has played a major role in the architecture of Apache Axis2, Apache Airavata, WSO2 CEP (Siddhi), and WSO2 Choreo. He has designed two SOAP engines and helped build four. He is a committer (a developer who can commit to a code base) for Apache Axis, Axis2, Apache Geronimo, and Apache Airavata.

He joined WSO2 in 2009 after finishing his PhD. WSO2 products are used by many Fortune 500 companies such as airlines, banks, and governments. At WSO2, he has played an architecture review role for 10+ projects and 100+ releases. He reviewed hundreds of customer solution architectures and deployments and sat in on thousands of architecture reviews. He has published 40+ peer-reviewed research articles, which have been referenced by thousands of other research publications.

Table of Contents

Chapter 1: Introduction to Software Leadership 1

Role of Judgment 1

Goal of This Book 3

Part I: Introduction 6

Part II: Essential Background 7

Part III: System Design 7

Part IV: Putting Everything Together 8

Chapter 2: Understanding Systems, Design, and Architecture 9

What Is Software Architecture? 9

How to Design a System 11

Five Questions 12

Seven Principles: The Overarching Concepts 16

Designing for an Online Bookstore 24

Designing for the Cloud 27

Summary 29

Chapter 3: Mental Models for Understanding and Explaining System Performance 31

A Computer System 32

Models for Performance 33

Optimization Techniques 41

Intuitive Feel for Performance 46

Leadership Considerations 46

Summary 47

Chapter 4: Understanding User Experience (UX) 49

General UX Concepts for Architects 49

UX Design for Configurations 53

UX Design for APIs 54

UX Design for Extensions 56

Leadership Considerations 57

Summary 57

Chapter 5: Macro Architecture: Introduction 59

History of Macro Architecture 60

Modern Architectures 62

Macro Architectural Building Blocks 63

Leadership Considerations 66

Summary 68

Chapter 6: Macro Architecture: Coordination 69

Approach 1: Drive Flow from Client 69

Approach 2: Use Another Service 70

Approach 3: Use Centralized Middleware 71

Approach 4: Implement Choreography 71

Leadership Considerations 73

Summary 73

Chapter 7: Macro Architecture: Preserving Consistency of State 75

Why Transactions? 75

Why Do We Need to Go Beyond Transactions? 76

Going Beyond Transactions 77

Best Practices 80

Leadership Considerations 81

Summary 83

Chapter 8: Macro Architecture: Handling Security 85

User Management 86

Interaction Security 88

Storage, GDPR, and Other Regulations 96

Security Strategy and Advice 98

Leadership Considerations 101

Summary 103

Chapter 9: Macro Architecture: Handling High Availability and Scale 105

Adding High Availability 105

Understanding Scalability 109

Scaling for a Modern Architecture: Base Solution 110

Scaling: The Tools of Trade 111

Building Scalable Systems 113

Leadership Considerations 117

Summary 118

Chapter 10: Macro Architecture: Microservices Considerations 119

Decision 1: Handling Shared Database(s) 120

Decision 2: Securing Microservices 122

Decision 3: Coordinating Microservices 122

Decision 4: Avoiding Dependency Hell 122

Loosely Coupled, Repository-Based Teams as an Alternative to Microservices 125

Leadership Considerations 126

Summary 127

Chapter 11: Server Architectures 129

Writing a Service 129

Understanding Best Practices for Writing a Service 130

Understanding Advanced Techniques 132

Using These Techniques in Practice 143

Leadership Considerations 146

Summary 147

Chapter 12: Building Stable Systems 149

Why Do Systems Fail, and What Can We Do About Them? 149

How to Handle Known Errors 151

Common Bugs 159

How to Handle Unknown Errors 161

Graceful Degradation 163

Leadership Considerations 163

Summary 164

Chapter 13: Building and Evolving the Systems 165

Getting Your Hands Dirty 165

Communicating the Design 172

Evolving the System: How to Learn from Your Users and Improve the System 172

Leadership Considerations 175

Summary 176

Index 179

Additional information

NGR9780138249731
9780138249731
0138249733
Software Architecture and Decision-Making: Leveraging Leadership, Technology, and Product Management to Build Great Products by Srinath Perera
New
Paperback
Pearson Education (US)
2024-01-02
208
N/A
Book picture is for illustrative purposes only, actual binding, cover or edition may vary.
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