000131439 001__ 131439 000131439 005__ 20250612142454.0 000131439 0247_ $$2doi$$a10.1007/978-3-030-92916-9_9 000131439 0248_ $$2sideral$$a136898 000131439 037__ $$aART-2021-136898 000131439 041__ $$aeng 000131439 100__ $$0(orcid)0000-0003-3057-6273$$aTolosana-Calasanz, Rafael$$uUniversidad de Zaragoza 000131439 245__ $$aModelling Serverless Function Behaviours 000131439 260__ $$c2021 000131439 5203_ $$aThe 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. 000131439 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/ 000131439 594__ $$a2.1$$b2021 000131439 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000131439 700__ $$aCastañé, Gabriel G. 000131439 700__ $$0(orcid)0000-0002-4198-8241$$aBañares, José Á.$$uUniversidad de Zaragoza 000131439 700__ $$aRana, Omer 000131439 7102_ $$15007$$2570$$aUniversidad de Zaragoza$$bDpto. Informát.Ingenie.Sistms.$$cÁrea Lenguajes y Sistemas Inf. 000131439 773__ $$g13072 (2021), 109-122$$pLect. notes comput. sci.$$tLecture Notes in Computer Science$$x0302-9743 000131439 8564_ $$s837250$$uhttps://zaguan.unizar.es/record/131439/files/texto_completo.pdf$$yVersión publicada 000131439 8564_ $$s1493714$$uhttps://zaguan.unizar.es/record/131439/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000131439 909CO $$ooai:zaguan.unizar.es:131439$$particulos$$pdriver 000131439 951__ $$a2025-06-12-14:23:39 000131439 980__ $$aARTICLE