3 Non-functional requirements
This chapter covers
- Discussing non-functional requirements at the start of the interview
- Using techniques and technologies to fulfill non-functional requirements
- Optimizing for non-functional requirements
A system has functional and non-functional requirements. Functional requirements describe the inputs and outputs of the system. You can represent them as a rough API specification and endpoints.
Non-functional requirements refer to requirements other than the system inputs and outputs. Typical non-functional requirements include the following, to be discussed in detail later in this chapter.
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Scalability—The ability of a system to adjust its hardware resource usage easily and with little fuss to cost-efficiently ...
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