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Assuring the evolvability of microservices: insights into industry practices and challenges

  • While Microservices promise several beneficial characteristics for sustainable long-term software evolution, little empirical research covers what concrete activities industry applies for the evolvability assurance of Microservices and how technical debt is handled in such systems. Since insights into the current state of practice are very important for researchers, we performed a qualitative interview study to explore applied evolvability assurance processes, the usage of tools, metrics, and patterns, as well as participants’ reflections on the topic. In 17 semi-structured interviews, we discussed 14 different Microservice-based systems with software professionals from 10 companies and how the sustainable evolution of these systems was ensured. Interview transcripts were analyzed with a detailed coding system and the constant comparison method. We found that especially systems for external customers relied on central governance for the assurance. Participants saw guidelines like architectural principles as important to ensure a base consistency for evolvability. Interviewees also valued manual activities like code review, even though automation and tool support was described as very important. Source code quality was the primary target for the usage of tools and metrics. Despite most reported issues being related to Architectural Technical Debt (ATD), our participants did not apply any architectural or service-oriented tools and metrics. While participants generally saw their Microservices as evolvable, service cutting and finding an appropriate service granularity with low coupling and high cohesion were reported as challenging. Future Microservices research in the areas of evolution and technical debt should take these findings and industry sentiments into account.

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Metadaten
Author of HS ReutlingenBogner, Justus; Zimmermann, Alfred
DOI:https://doi.org/10.1109/ICSME.2019.00089
Erschienen in:2019 IEEE International Conference on Software Maintenance and Evolution : ICSME 2019, 30 September - 4 October 2019, Cleveland, Ohio
Publisher:IEEE
Document Type:Conference proceeding
Language:English
Publication year:2019
Tag:Microservices; evolvability; industry; interviews
Page Number:11
First Page:546
Last Page:556
DDC classes:004 Informatik
Open access?:Nein
Licence (German):License Logo  In Copyright - Urheberrechtlich geschützt