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by Matthew Webster, Phil Wakelin, Kellie Mathis, Rich Jackson, Mark Hollands, Randy
How Walmart Became a Cloud Services Provider with IBM CICS
Front cover
Notices
Trademarks
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Preface
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Chapter 1. Reasons to become a cloud service provider
1.1 The development obstacle
1.2 The developer is the consumer
1.3 How z/OS and CICS are relevant to cloud
1.3.1 The journey from development obstacle to cloud services
1.4 Challenging the roles of IT
1.5 Summary
Chapter 2. The service consumer
2.1 Consumer requirements
2.2 Walmart caching requirement
2.3 Self-service
2.4 Connecting platforms
2.5 CICS as a consumer
2.6 Summary
Chapter 3. The service provider
3.1 Why Walmart chose CICS for the caching service
3.1.1 Mixed language support
3.1.2 Everything in the box
3.1.3 Monitoring and diagnostics
3.1.4 Vendor environment
3.2 Foundational underpinnings
3.2.1 Naming conventions
3.2.2 Standards
3.3 Five essential characteristics of cloud
3.3.1 On-demand self-service
3.3.2 Broad network access
3.3.3 Resource pooling
3.3.4 Rapid elasticity
3.3.5 Measured service
3.4 Microservices architecture
3.4.1 Application design pattern
3.4.2 Independent, limited function services
3.4.3 Encouraged by cloud delivery model
3.5 Summary
Chapter 4. The CICS systems programmer
4.1 CICS architecture
4.2 Service owning region
4.3 CICS resource definitions
4.3.1 CICS resource definitions for services
4.4 Security
4.4.1 SSL certificates and TCP/IP services
4.4.2 Wildcard certificates and host names
4.4.3 Basic authentication
4.4.4 Authentication at the server level
4.4.5 Authentication at the service level
4.5 Multitenancy
4.6 Network access
4.7 Summary
Chapter 5. The z/OS systems programmer
5.1 Sysplex architecture
5.1.1 Resource pooling, rapid elasticity, and measured service
5.1.2 Unique characteristics
5.1.3 Important pieces
5.2 Workload manager
5.2.1 LPAR weighting
5.2.2 Service class
5.2.3 WLM ASID weights
5.3 TCP/IP
5.3.1 Enabling sysplex distribution
5.3.2 Establish shared ports
5.3.3 Assign DVIPA
5.3.4 Domain Name System
5.4 High availability
5.5 VSAM RLS
5.5.1 Feature enablement
5.5.2 Sizing
5.5.3 System managed assignments
5.6 z/OS configuration
5.7 Security
5.8 Summary
Chapter 6. Operational considerations
6.1 Capacity planning
6.1.1 The concerns of a capacity planner
6.1.2 Partnership with capacity planners
6.2 Scaling and elasticity
6.3 Metering and measurement
6.3.1 Charging for service usage
6.3.2 Use of measurement information for scaling
6.3.3 Evolution of service-oriented architecture to cloud service
6.4 Maintenance
6.5 Problem determination
6.5.1 Isolation of consumers in a multi-tenant environment
6.5.2 Standards
6.5.3 Communication with other teams
6.6 Summary
Chapter 7. DevOps perspective
7.1 The challenge of variable speed IT
7.2 The role of DevOps
7.3 Cloud services
7.4 Promotion to production
7.5 Process and governance
7.6 Service versioning
7.7 Summary
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Note: Before using this information and the product it supports, read the information in “Notices” on page vii.
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