Software Architecture Module 5 - Lessons 1 & 2

Описание: Introduction to Software Quality Attributes:

Explores quality attributes, which define how well a software system performs its tasks. While functional requirements specify what a system does, quality attributes address non-functional requirements (NFRs), such as performance, scalability, security, and maintainability, which directly impact user satisfaction and system success.

This module begins by explaining the importance of quality attributes in software architecture. These attributes influence key decisions during the design phase, shaping how systems handle demands like large-scale traffic, data security, or fast response times.

Next, it categorizes quality attributes into two types:

1. Runtime Attributes: Attributes that manifest during system operation, such as performance, scalability, availability, and security.

2. Design-time Attributes: Attributes that impact system development and maintenance, such as modifiability, testability, and portability.

The module also discusses trade-offs between attributes, like optimizing for performance at the cost of maintainability. Architects must balance these trade-offs to meet business and user needs effectively.

Practical examples and case studies illustrate how focusing on quality attributes leads to robust and efficient systems. For instance, a system designed for high availability minimizes downtime and enhances user trust, while a focus on modifiability adapts easily to changing requirements, and reduces long-term costs.

By the end of this module, learners will understand the role of quality attributes in shaping software architecture and be prepared to successfully integrate them into design decisions.