Event-Driven Architecture - Les Phillips - Bog - Pearson Education (US) - Plusbog.dk
Improving Business Agility with EDA Going beyond SOA, enterprises can gain even greater agility by implementing event-driven architectures (EDAs) that automatically detect and react to significant business events. However, EDA planning and deployment is complex, and even experienced SOA architects and developers need expert guidance. In Event-Driven Architecture , four leading IT innovators present both the theory of EDA and practical, step-by-step guidance to implementing it successfully. The authors first establish a thorough and workable definition of EDA and explore how EDA can help solve many of today’s most difficult business and IT challenges. You’ll learn how EDAs work, what they can do today, and what they might be able to do as they mature. You’ll learn how to determine whether an EDA approach makes sense in your environment and how to overcome the difficult interoperability and integration issues associated with successful deployment. Finally, the authors present chapter-length case studies demonstrating how both full and partial EDA implementations can deliver exceptional business value. Coverage includes - - How SOA and Web services can power event-driven architectures - - The role of SOA infrastructure, governance, and security in EDA environments - - EDA core components: event consumers and producers, message backbones, Web service transport, and more - - EDA patterns, including simple event processing, event stream processing, and complex event processing - - Designing flexible stateless events that can respond to unpredictable customers, suppliers, and business partners - - Addressing technical and business challenges such as project management and communication - - EDA at work: real-world applications across multiple verticals - Hugh Taylor is a social software evangelist for IBM Lotus Software. He coauthored Understanding Enterprise SOA and has written extensively on Web services and SOA. He holds an MBA from Harvard Business School. Angela Yochem is an executive in a multinational technology company and is a recognized thought leader in architecture and large-scale technology management. Les Phillips , VP, enterprise architecture, at SunTrust Banks Inc., is responsible for defining the strategic and business IT foundation for many areas of the enterprise. Frank Martinez , EVP, product strategy, at SOA Software, is a recognized expert on distributed, enterprise application, and infrastructure platforms. He has served as senior operating executive for several venture-backed firms and helped build Intershop Communications into a multibillion-dollar public company. Foreword xi Preface xii Introduction 1 Event-Driven Architecture: A Working Definition 1 The “New” Era of Interoperability Dawns 6 The ETA for Your EDA 9 Endnotes 9 PART I THE THEORY OF EDA Chapter 1 EDA: Opportunities and Obstacles 13 The Vortex 13 EDA: A Working Systemic Definition 14 The (Not So Smooth) Path to EDA 24 Defining Interoperability 26 Drivers of Interoperability 28 Application Integration: A Means to Interoperate 29 Interoperation and Business Process Management 31 Is There a Diet for All This Spaghetti? 35 How Architecture Promotes Integration 37 Management and Governance 39 Chapter Summary 43 Endnote 45 Chapter 2 SOA: The Building Blocks of EDA 47 Making You an Offer You Can’t Understand 47 SOA: The Big Picture 48 Defining Service 49 Service-Based Integration 50 Web Services 51 What Is SOA? 59 Loose Coupling in the SOA 60 Chapter Summary 61 Chapter 3 Characteristics of EDA 63 Firing Up the Corporate Neurons 63 Revisiting the Enterprise Nervous System 63 The Ideal EDA 78 BAM--A Related Concept 86 Chapter Summary 87 Endnotes 89 Chapter 4 The Potential of EDA 91 Introduction 91 EDA’s Potential in Enterprise Computing 91 EDA and Enterprise Agility 100 EDA and Society’s Computing Needs 102 EDA and Compliance 107 Chapter Summary 108 Chapter 5 The SOA-EDA Connection 111 Getting Real 111 Event Services 112 The Service Network 114 Implementing the SOA and Service Network 116 How to Design an SOA 122 The Real “Bottom Line” 134 Chapter Summary 137 PART II EDA IN PRACTICE Chapter 6 Thinking EDA 141 A Novel Mind-Set 141 Reducing Central Control 142 Thinking about EDA Implementation 148 When EDA Is Not the Answer 151 An EDA Product Examined 153 Chapter Summary 157 Endnotes 158 Chapter 7 Case Study: Airline Flight Control 159 Learning Objectives 160 Business Context: Airline Crunch Time 160 The Ideal Airline Flight Control EDA 167 Wh
