Content deleted Content added
m Tule-hog moved page Elasticity (system resource) to Elasticity (computing): alternate disambiguator |
short description, links Tags: Mobile edit Mobile app edit iOS app edit App section source |
||
Line 1:
{{short description|Degree to which a computer system can adapt to workload changes}}
{{redirect|Elastic computing|the physical property|Elasticity (physics)|the economics measurement|Elasticity (economics)}}
In [[computing]], '''elasticity''' is defined as "the degree to which a system is able to adapt to workload changes by provisioning and de-provisioning [[System resource|resources]] in an [[Autonomic computing|autonomic]] manner, such that at each point in time the available resources match the current demand as closely as possible".<ref>{{cite journal|last=Herbst|first=Nikolas|author2=Samuel Kounev |author3=Ralf Reussner |title=Elasticity in Cloud Computing: What It Is, and What It Is Not|journal=Proceedings of the 10th International Conference on Autonomic Computing (ICAC 2013), San Jose, CA, June 24–28|year=2013|url=http://sdqweb.ipd.kit.edu/publications/pdfs/HeKoRe2013-ICAC-Elasticity.pdf}}</ref><ref>Nikolas Herbst, Rouven Krebs, Giorgos Oikonomou, George Kousiouris, Athanasia Evangelinou, Alexandru Iosup, and Samuel Kounev. Ready for Rain? A View from SPEC Research on the Future of Cloud Metrics. Technical Report SPEC-RG-2016-01, SPEC Research Group - Cloud Working Group, Standard Performance Evaluation Corporation (SPEC), 2016. [https://research.spec.org/fileadmin/user_upload/documents/rg_cloud/endorsed_publications/SPEC-RG-2016-01_CloudMetrics.pdf]</ref> Elasticity is a defining characteristic that differentiates [[cloud computing]] from previously proposed [[distributed computing]] paradigms, such as [[grid computing]]. The dynamic adaptation of capacity, e.g., by altering the use of [[system resource|computing resources]], to meet a varying workload is called "elastic computing".<ref>{{citation |title=Cloud Computing Principles and Paradigms |publisher=John Wiley and Sons |year=2011 |isbn=978-0-470-88799-8}}</ref><ref>{{citation |author=Perez |title=Responsive Elastic Computing |date=15 June 2009 |publisher=Association for Computing Machinery |isbn=978-1-60558-578-9|display-authors=etal}}</ref>
In the world of [[distributed system|distributed systems]], there are several definitions according to the authors, some considering the concepts of [[scalability]] a sub-part of elasticity, others as being distinct.
| |||