Onur Can Çakmak

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    A Model-based, Quality Attribute-guided Architecture Re-Design Process at Google
    Qin Jia
    Yuanfang Cai
    2023 IEEE/ACM 45th International Conference on Software Engineering: Software Engineering in Practice (ICSE-SEIP)
    Preview abstract Communicating and justifying design decisions are difficult, especially when the architecture design has to evolve. In this paper, we report our experiences of using formal but lightweight design models to communicate, justify, and analyze the quality trade-offs of an architecture revision plan for Monarch, a large-scale legacy system from Google. We started from a few critical user scenarios and their associated quality attribute scenarios, which makes these models lightweight and concise, expressing high-level abstractions only. We also separated static views from dynamic views so that each diagram can be precise and suitable for analyzing different types of quality attributes respectively. The combination of scenarios, quality attributes, and lightweight modeling was well accepted by the team as an effective way to analyze and communicate the trade-offs. A few days after we presented and shared this process, two new projects within the Monarch team adopted component and sequence diagrams in their design documents, and two other product areas within Google started to learn and to adopt the process as well. Our experience indicates that these architecture modeling and analysis techniques can be integrated into software development process to communicate and assess features, quality attributes, or design decisions continuously and iteratively. View details
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