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FUSPAQ: A Function Selection Platform to Adjust QoS in a FaaS Application

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Service-Oriented Computing – ICSOC 2022 Workshops (ICSOC 2022)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 13821))

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Abstract

Function as a Service (FaaS) development has numerous benefits for application deployment, management, and maintenance. However, the lack of control over the infrastructure and, often, over the FaaS platform itself, makes it necessary to look for external solutions that allow the operation of the application to be adapted to different requirements or changing execution conditions. In a FaaS application, the quality of service (QoS) is determined by the characteristics of the functions executed to perform each workflow operation. Deciding the most suitable functions providing a QoS is a complex process due to the high variability of possible function implementations, each giving different qualities. Leaving this task in the hands of the developer is not a good solution and makes it difficult to program the application. We present FUSPAQ, a framework for working with serverless architectures, which can automatically select the best functions executed at runtime to satisfy specific QoS requirements. With this objective, a Software Product Line approach is used, modeling the application’s tasks and operations using Feature Models that specify the variability of functions that can perform the same operation as a family of functions. We use Z3, a cross-platform satisfiability modulo theories (SMT) solver, to generate optimal configurations. As requirements can change over time, the system automatically adapts to these changes to continue maintaining the desired QoS. We test our approach with different QoS parameters, and analyse the value added to serverless frameworks.

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Notes

  1. 1.

    Source code available at https://github.com/pserranouma/fuspaq.

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Author information

Authors and Affiliations

  1. Departamento de Lenguajes y Ciencias de la Computación, Universidad de Málaga, Málaga, Spain

    Pablo Serrano-Gutierrez, Inmaculada Ayala & Lidia Fuentes

  2. ITIS Software, Universidad de Málaga, Málaga, Spain

    Inmaculada Ayala & Lidia Fuentes

Authors
  1. Pablo Serrano-Gutierrez
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  2. Inmaculada Ayala
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  3. Lidia Fuentes
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Corresponding author

Correspondence to Pablo Serrano-Gutierrez .

Editor information

Editors and Affiliations

  1. University of Malaga, Málaga, Spain

    Javier Troya

  2. Politecnico di Milano, Milano, Italy

    Raffaela Mirandola

  3. University of Castilla-La Mancha, Albacete, Spain

    Elena Navarro

  4. University of the Republic, Montevideo, Uruguay

    Andrea Delgado

  5. University of Seville, Sevilla, Spain

    Sergio Segura

  6. University of Cádiz, Cádiz, Spain

    Guadalupe Ortiz

  7. Faculty of Informatics, Universita della Svizzera Italiana, Lugano, Switzerland

    Cesare Pautasso

  8. Karlsuhe Institute of Technology, Karlsruhe, Germany

    Christian Zirpins

  9. University of Seville, Seville, Spain

    Pablo Fernández

  10. ISA, Universidad de Sevilla, Sevilla, Spain

    Antonio Ruiz-Cortés

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Serrano-Gutierrez, P., Ayala, I., Fuentes, L. (2023). FUSPAQ: A Function Selection Platform to Adjust QoS in a FaaS Application. In: Troya, J., et al. Service-Oriented Computing – ICSOC 2022 Workshops. ICSOC 2022. Lecture Notes in Computer Science, vol 13821. Springer, Cham. https://doi.org/10.1007/978-3-031-26507-5_20

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  • DOI: https://doi.org/10.1007/978-3-031-26507-5_20

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-031-26506-8

  • Online ISBN: 978-3-031-26507-5

  • eBook Packages: Computer ScienceComputer Science (R0)

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