131439 20250612142454.0 doi 10.1007/978-3-030-92916-9_9 sideral 136898 ART-2021-136898 eng Tolosana-Calasanz, Rafael Universidad de Zaragoza (orcid)0000-0003-3057-6273 Modelling Serverless Function Behaviours 2021 The serverless computing model extends potential deployment options for cloud applications, by allowing users to focus on building and deploying their code without needing to configure or manage the underlying computational resources. Cost and latency constraints in stream processing user applications often push computations closer to the sources of data, leading to challenges for dynamically distributing stream operators across the edge/fog/cloud heterogeneous nodes and the routing of data flows. Various approaches to support operator placement across edge and cloud resources and data routing are beginning to be addressed through the serverless model. Understanding how stream processing operators can be mapped into serverless functions also offers cost incentives for users – as charging is now on a subsecond basis (rather than hourly). A dynamic Petri net model of serverless functions is proposed in this work, which takes account of the computational requirements of functions, the resources on which these functions are hosted, and key parameters that impact the behaviour of serverless functions – such as warm/cold start up times. The model can be used by developers/users of serverless functions to understand how deployment optimisation can be used to reduce application time, and to analyse various scenarios on choosing function granularity, data size and cost. info:eu-repo/semantics/closedAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 2.1 2021 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Castañé, Gabriel G. Bañares, José Á. Universidad de Zaragoza (orcid)0000-0002-4198-8241 Rana, Omer 5007 570 Universidad de Zaragoza Dpto. Informát.Ingenie.Sistms. Área Lenguajes y Sistemas Inf. 13072 (2021), 109-122 Lect. notes comput. sci. Lecture Notes in Computer Science 0302-9743 837250 http://zaguan.unizar.es/record/131439/files/texto_completo.pdf Versión publicada 1493714 http://zaguan.unizar.es/record/131439/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:131439 articulos driver 2025-06-12-14:23:39 ARTICLE