Chapter 1, Understanding NFRs, the chapter provides and introduction of NFRs and why NFRs are a critical for building software systems. The chapter also explains the various KPI for each of the key of NFRs that is, scalability, availability, reliability and so on. The book covers the most critical 24 NFRs that are applicable for IT applications and systems.
Chapter 2, Taxonomy and Framework for NFRs, this chapter describes the taxonomy of NFRs that is, scalability, availability, reliability and so on. The chapter outlines entire life cycle of NFRs, The chapter describes a framework that can leveraged by business analyst and architects for discovering NFRs on various engagements. The framework will focus on the KPIs and KRA for each of the NFRs which will be the critical input for the solution design phase.
Chapter 3, Methodology Eliciting - Non Functional Requirements, this chapter outlines methodology for discovering (elicitations) NFRs. The chapter describes a framework that can be leveraged by business analyst for elicitations of NFRs. The chapter also outlines a framework for prioritization of NFRs. The output of this stage will be the critical input for the solution architecture phase.
Chapter 4, Solutions Addressing NFRs, this chapter outlines the solutioning part of the NFRs providing insights, guidance and principles for architecting NFRs. The book covers all the key NFRs that are critical for any project and for each NFR provides the various alternatives pertaining to the solutioning and the design principles that need to be applied to achieve the desired outcome for example, high availability or scalability or reliability and so on. The book includes considerations for bespoke (Java, .Net) and COTS applications and are applicable to any IT applications/systems in different domains.
Chapter 5, Architectural Patterns and its Impact on NFRs, this chapter outlines the patterns for NFRs providing insights into architecting NFRs. The chapter covers all the key tiers / layers that are critical for any project and describes various patterns pertaining to the business, database and integration tiers. This also covers impact on various NFRs. This chapter describes the trade-offs between various NFRs and the best practices to be applied on engagements.
Chapter 6, Sizing, Measurement and Monitoring, this chapter deals with the measurement of NFRs. This outlines four methodologies for NFRs monitoring and measurement. These include sizing, analytical modelling, quality assurance and monitoring and management. This chapter also describes the approach in depth for monitoring and measuring NFRs.
Chapter 7, Understanding Pivotal NFRs and Closing Thoughts, this chapter provides an introduction to the pivotal NFRs. The chapter explains the various KPI for each of the pivotal NFRs. This is the final chapter of the book and provides summary and trends for the NFR domain. This also outlines architecture assessment and NFR measurement methodology.