An Exploratory Case Study on Effort Estimation in Microservices

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Date

2023

Authors

Leblebici, Özkan
Omural,N.K.
Caliskanel,N.
Leblebici,O.
Demirors,O.

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Institute of Electrical and Electronics Engineers Inc.

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Information Systems Engineering
Information Systems is an academic and professional discipline which follows data collection, utilization, storage, distribution, processing and management processes and modern technologies used in this field. Our department implements a pioneering and innovative education program that aims to raise the manpower, able to meet the changing and developing needs and expectations of our country and the world. Our courses on current information technologies especially stand out.

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Abstract

Software project management plays an important role in producing high-quality software, and effort estimation can be considered as a backbone for successful project management. Size is a very significant attribute of software by being the only input to perform early effort estimation. Even though functional size measurement methods showed successful results in effort estimation of traditional data-centric architectures such as monoliths, they were not designed for today's architectures which are more service-based and decentralized such as microservices. In these new systems, the event concept is highly used specifically for communication among different services. By being motivated by this fact, in this study, we looked for more microservice-compatible ways of sizing microservices using events and developed a method accordingly. Then, we conducted an exploratory case study in an organization using agile methods and measured the size of 17 Product Backlog Items (PBIs) to assess how this proposed method can be useful in effort estimation in microservices. The implication from the case study is that despite performing a more accurate effort estimation using the proposed size measurement than COSMIC, we were unable to significantly outperform using the total number of events. However, our suggested approach demonstrated to us a different way to use software size in terms of events, namely, to determine the coupling complexity of the project. This finding can be beneficial specifically when evaluating the change requests. © 2023 IEEE.

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Keywords

COSMIC, Effort Estimation, Event, Microservices, Software Size Measurement

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2

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Proceedings - 2023 49th Euromicro Conference on Software Engineering and Advanced Applications, SEAA 2023 -- 49th Euromicro Conference on Software Engineering and Advanced Applications, SEAA 2023 -- 6 September 2023 through 8 September 2023 -- Durres -- 196105

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Start Page

215

End Page

218

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