{"product_id":"service-quality-of-cloudbased-applications-9781118763292","title":"Service Quality of CloudBased Applications","description":"\u003cb\u003eBook Synopsis\u003c\/b\u003e\u003cbr\u003eThis book explains why applications running on cloud might not deliver the same service reliability, availability, latency and overall quality to end users as they do when the applications are running on traditional (non-virtualized, non-cloud) configurations, and explains what can be done to mitigate that risk.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTable of Contents\u003c\/b\u003e\u003cbr\u003eFigures xv \u003cp\u003eTables and Equations xxi\u003c\/p\u003e \u003cp\u003e\u003cb\u003e1 INTRODUCTION 1\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e1.1 Approach 1\u003c\/p\u003e \u003cp\u003e1.2 Target Audience 3\u003c\/p\u003e \u003cp\u003e1.3 Organization 3\u003c\/p\u003e \u003cp\u003e\u003cb\u003eI CONTEXT 7\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e\u003cb\u003e2 APPLICATION SERVICE QUALITY 9\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e2.1 Simple Application Model 9\u003c\/p\u003e \u003cp\u003e2.2 Service Boundaries 11\u003c\/p\u003e \u003cp\u003e2.3 Key Quality and Performance Indicators 12\u003c\/p\u003e \u003cp\u003e2.4 Key Application Characteristics 15\u003c\/p\u003e \u003cp\u003e2.5 Application Service Quality Metrics 17\u003c\/p\u003e \u003cp\u003e2.6 Technical Service versus Support Service 27\u003c\/p\u003e \u003cp\u003e2.7 Security Considerations 28\u003c\/p\u003e \u003cp\u003e\u003cb\u003e3 CLOUD MODEL 29\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e3.1 Roles in Cloud Computing 30\u003c\/p\u003e \u003cp\u003e3.2 Cloud Service Models 30\u003c\/p\u003e \u003cp\u003e3.3 Cloud Essential Characteristics 31\u003c\/p\u003e \u003cp\u003e3.4 Simplifi ed Cloud Architecture 33\u003c\/p\u003e \u003cp\u003e3.5 Elasticity Measurements 36\u003c\/p\u003e \u003cp\u003e3.6 Regions and Zones 44\u003c\/p\u003e \u003cp\u003e3.7 Cloud Awareness 45\u003c\/p\u003e \u003cp\u003e\u003cb\u003e4 VIRTUALIZED INFRASTRUCTURE IMPAIRMENTS 49\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e4.1 Service Latency, Virtualization, and the Cloud 50\u003c\/p\u003e \u003cp\u003e4.2 VM Failure 54\u003c\/p\u003e \u003cp\u003e4.3 Nondelivery of Configured VM Capacity 54\u003c\/p\u003e \u003cp\u003e4.4 Delivery of Degraded VM Capacity 57\u003c\/p\u003e \u003cp\u003e4.5 Tail Latency 59\u003c\/p\u003e \u003cp\u003e4.6 Clock Event Jitter 60\u003c\/p\u003e \u003cp\u003e4.7 Clock Drift 61\u003c\/p\u003e \u003cp\u003e4.8 Failed or Slow Allocation and Startup of VM Instance 62\u003c\/p\u003e \u003cp\u003e4.9 Outlook for Virtualized Infrastructure Impairments 63\u003c\/p\u003e \u003cp\u003e\u003cb\u003eII ANALYSIS 65\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e\u003cb\u003e5 APPLICATION REDUNDANCY AND CLOUD COMPUTING 67\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e5.1 Failures, Availability, and Simplex Architectures 68\u003c\/p\u003e \u003cp\u003e5.2 Improving Software Repair Times via Virtualization 70\u003c\/p\u003e \u003cp\u003e5.3 Improving Infrastructure Repair Times via Virtualization 72\u003c\/p\u003e \u003cp\u003e5.4 Redundancy and Recoverability 75\u003c\/p\u003e \u003cp\u003e5.5 Sequential Redundancy and Concurrent Redundancy 80\u003c\/p\u003e \u003cp\u003e5.6 Application Service Impact of Virtualization Impairments 84\u003c\/p\u003e \u003cp\u003e5.7 Data Redundancy 90\u003c\/p\u003e \u003cp\u003e5.8 Discussion 92\u003c\/p\u003e \u003cp\u003e\u003cb\u003e6 LOAD DISTRIBUTION AND BALANCING 97\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e6.1 Load Distribution Mechanisms 97\u003c\/p\u003e \u003cp\u003e6.2 Load Distribution Strategies 99\u003c\/p\u003e \u003cp\u003e6.3 Proxy Load Balancers 99\u003c\/p\u003e \u003cp\u003e6.4 Nonproxy Load Distribution 101\u003c\/p\u003e \u003cp\u003e6.5 Hierarchy of Load Distribution 102\u003c\/p\u003e \u003cp\u003e6.6 Cloud-Based Load Balancing Challenges 103\u003c\/p\u003e \u003cp\u003e6.7 The Role of Load Balancing in Support of Redundancy 103\u003c\/p\u003e \u003cp\u003e6.8 Load Balancing and Availability Zones 104\u003c\/p\u003e \u003cp\u003e6.9 Workload Service Measurements 104\u003c\/p\u003e \u003cp\u003e6.10 Operational Considerations 105\u003c\/p\u003e \u003cp\u003e6.11 Load Balancing and Application Service Quality 107\u003c\/p\u003e \u003cp\u003e\u003cb\u003e7 FAILURE CONTAINMENT 111\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e7.1 Failure Containment 111\u003c\/p\u003e \u003cp\u003e7.2 Points of Failure 116\u003c\/p\u003e \u003cp\u003e7.3 Extreme Solution Coresidency 122\u003c\/p\u003e \u003cp\u003e7.4 Multitenancy and Solution Containers 124\u003c\/p\u003e \u003cp\u003e\u003cb\u003e8 CAPACITY MANAGEMENT 127\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e8.1 Workload Variations 128\u003c\/p\u003e \u003cp\u003e8.2 Traditional Capacity Management 129\u003c\/p\u003e \u003cp\u003e8.3 Traditional Overload Control 129\u003c\/p\u003e \u003cp\u003e8.4 Capacity Management and Virtualization 131\u003c\/p\u003e \u003cp\u003e8.5 Capacity Management in Cloud 133\u003c\/p\u003e \u003cp\u003e8.6 Storage Elasticity Considerations 135\u003c\/p\u003e \u003cp\u003e8.7 Elasticity and Overload 136\u003c\/p\u003e \u003cp\u003e8.8 Operational Considerations 137\u003c\/p\u003e \u003cp\u003e8.9 Workload Whipsaw 138\u003c\/p\u003e \u003cp\u003e8.10 General Elasticity Risks 140\u003c\/p\u003e \u003cp\u003e8.11 Elasticity Failure Scenarios 141\u003c\/p\u003e \u003cp\u003e\u003cb\u003e9 RELEASE MANAGEMENT 145\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e9.1 Terminology 145\u003c\/p\u003e \u003cp\u003e9.2 Traditional Software Upgrade Strategies 146\u003c\/p\u003e \u003cp\u003e9.3 Cloud-Enabled Software Upgrade Strategies 153\u003c\/p\u003e \u003cp\u003e9.4 Data Management 158\u003c\/p\u003e \u003cp\u003e9.5 Role of Service Orchestration in Software Upgrade 159\u003c\/p\u003e \u003cp\u003e9.6 Conclusion 161\u003c\/p\u003e \u003cp\u003e\u003cb\u003e10 END-TO-END CONSIDERATIONS 163\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e10.1 End-to-End Service Context 163\u003c\/p\u003e \u003cp\u003e10.2 Three-Layer End-to-End Service Model 169\u003c\/p\u003e \u003cp\u003e10.3 Distributed and Centralized Cloud Data Centers 177\u003c\/p\u003e \u003cp\u003e10.4 Multitiered Solution Architectures 183\u003c\/p\u003e \u003cp\u003e10.5 Disaster Recovery and Geographic Redundancy 184\u003c\/p\u003e \u003cp\u003e\u003cb\u003eIII RECOMMENDATIONS 191\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e\u003cb\u003e11 ACCOUNTABILITIES FOR SERVICE QUALITY 193\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e11.1 Traditional Accountability 193\u003c\/p\u003e \u003cp\u003e11.2 The Cloud Service Delivery Path 194\u003c\/p\u003e \u003cp\u003e11.3 Cloud Accountability 197\u003c\/p\u003e \u003cp\u003e11.4 Accountability Case Studies 200\u003c\/p\u003e \u003cp\u003e11.5 Service Quality Gap Model 205\u003c\/p\u003e \u003cp\u003e11.6 Service Level Agreements 210\u003c\/p\u003e \u003cp\u003e\u003cb\u003e12 SERVICE AVAILABILITY MEASUREMENT 213\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e12.1 Parsimonious Service Measurements 214\u003c\/p\u003e \u003cp\u003e12.2 Traditional Service Availability Measurement 215\u003c\/p\u003e \u003cp\u003e12.3 Evolving Service Availability Measurements 217\u003c\/p\u003e \u003cp\u003e12.4 Evolving Hardware Reliability Measurement 226\u003c\/p\u003e \u003cp\u003e12.5 Evolving Elasticity Service Availability Measurements 228\u003c\/p\u003e \u003cp\u003e12.6 Evolving Release Management Service Availability Measurement 229\u003c\/p\u003e \u003cp\u003e12.7 Service Measurement Outlook 231\u003c\/p\u003e \u003cp\u003e\u003cb\u003e13 APPLICATION SERVICE QUALITY REQUIREMENTS 233\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e13.1 Service Availability Requirements 234\u003c\/p\u003e \u003cp\u003e13.2 Service Latency Requirements 237\u003c\/p\u003e \u003cp\u003e13.3 Service Reliability Requirements 237\u003c\/p\u003e \u003cp\u003e13.4 Service Accessibility Requirements 238\u003c\/p\u003e \u003cp\u003e13.5 Service Retainability Requirements 239\u003c\/p\u003e \u003cp\u003e13.6 Service Throughput Requirements 239\u003c\/p\u003e \u003cp\u003e13.7 Timestamp Accuracy Requirements 240\u003c\/p\u003e \u003cp\u003e13.8 Elasticity Requirements 240\u003c\/p\u003e \u003cp\u003e13.9 Release Management Requirements 241\u003c\/p\u003e \u003cp\u003e13.10 Disaster Recovery Requirements 241\u003c\/p\u003e \u003cp\u003e\u003cb\u003e14 VIRTUALIZED INFRASTRUCTURE MEASUREMENT AND MANAGEMENT 243\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e14.1 Business Context for Infrastructure Service Quality Measurements 244\u003c\/p\u003e \u003cp\u003e14.2 Cloud Consumer Measurement Options 245\u003c\/p\u003e \u003cp\u003e14.3 Impairment Measurement Strategies 247\u003c\/p\u003e \u003cp\u003e14.4 Managing Virtualized Infrastructure Impairments 252\u003c\/p\u003e \u003cp\u003e\u003cb\u003e15 ANALYSIS OF CLOUD-BASED APPLICATIONS 255\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e15.1 Reliability Block Diagrams and Side-by-Side Analysis 256\u003c\/p\u003e \u003cp\u003e15.2 IaaS Impairment Effects Analysis 257\u003c\/p\u003e \u003cp\u003e15.3 PaaS Failure Effects Analysis 259\u003c\/p\u003e \u003cp\u003e15.4 Workload Distribution Analysis 260\u003c\/p\u003e \u003cp\u003e15.5 Anti-Affi nity Analysis 262\u003c\/p\u003e \u003cp\u003e15.6 Elasticity Analysis 263\u003c\/p\u003e \u003cp\u003e15.7 Release Management Impact Effects Analysis 267\u003c\/p\u003e \u003cp\u003e15.8 Recovery Point Objective Analysis 268\u003c\/p\u003e \u003cp\u003e15.9 Recovery Time Objective Analysis 270\u003c\/p\u003e \u003cp\u003e\u003cb\u003e16 TESTING CONSIDERATIONS 273\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e16.1 Context for Testing 273\u003c\/p\u003e \u003cp\u003e16.2 Test Strategy 274\u003c\/p\u003e \u003cp\u003e16.3 Simulating Infrastructure Impairments 277\u003c\/p\u003e \u003cp\u003e16.4 Test Planning 278\u003c\/p\u003e \u003cp\u003e\u003cb\u003e17 CONNECTING THE DOTS 287\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003e17.1 The Application Service Quality Challenge 287\u003c\/p\u003e \u003cp\u003e17.2 Redundancy and Robustness 289\u003c\/p\u003e \u003cp\u003e17.3 Design for Scalability 292\u003c\/p\u003e \u003cp\u003e17.4 Design for Extensibility 292\u003c\/p\u003e \u003cp\u003e17.5 Design for Failure 293\u003c\/p\u003e \u003cp\u003e17.6 Planning Considerations 294\u003c\/p\u003e \u003cp\u003e17.7 Evolving Traditional Applications 296\u003c\/p\u003e \u003cp\u003e17.8 Concluding Remarks 301\u003c\/p\u003e \u003cp\u003eAbbreviations 303\u003c\/p\u003e \u003cp\u003eReferences 307\u003c\/p\u003e \u003cp\u003eAbout the Authors 311\u003c\/p\u003e \u003cp\u003eIndex 313\u003c\/p\u003e","brand":"John Wiley \u0026 Sons Inc","offers":[{"title":"Default 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