Elasticity (cloud computing) (original) (raw)
In cloud computing, elasticity is defined as "the degree to which a system is able to adapt to workload changes by provisioning and de-provisioning resources in an autonomic manner, such that at each point in time the available resources match the current demand as closely as possible". Elasticity is a defining characteristic that differentiates cloud computing from previously proposed computing paradigms, such as grid computing. The dynamic adaptation of capacity, e.g., by altering the use of computing resources, to meet a varying workload is called "elastic computing".
| Property | Value |
|---|---|
| dbo:abstract | In cloud computing, elasticity is defined as "the degree to which a system is able to adapt to workload changes by provisioning and de-provisioning resources in an autonomic manner, such that at each point in time the available resources match the current demand as closely as possible". Elasticity is a defining characteristic that differentiates cloud computing from previously proposed computing paradigms, such as grid computing. The dynamic adaptation of capacity, e.g., by altering the use of computing resources, to meet a varying workload is called "elastic computing". (en) L'élasticité dans le cloud computing est la capacité de ce cloud à s'adapter aux besoins applicatifs le plus rapidement possible. Il existe plusieurs définitions selon les auteurs, certains considérant les notions de Scalability et d'élasticité comme identiques, d'autres comme étant distinctes. L'arrivée de tels systèmes distribués (voir Calcul distribué) entraîne forcément des problèmes techniques qu'il faut régler ou limiter.Au niveau économique, l'arrivée de l'élasticité a eu des impacts chez les clients et les fournisseurs de cloud. Les fournisseurs ont par exemple créé un système de paiement « pay-as-you-go » permettant de payer les ressources utilisées à la demande. Ainsi, un client peut louer un serveur sur une courte période et à la taille voulue. De nombreux fournisseurs tels que Amazon Web Services, Microsoft Azure ou encore Google App Engine ont créé des serveurs de cloud à la demande. Mais chaque fournisseur de cloud a ses spécificités en termes de vitesse, d'élasticité, de latence, etc. (fr) Na computação em nuvem, a elasticidade é definida como "o grau em que um sistema é capaz de adaptar-se a carga de trabalho através de provisionamento e desprovisionamento de recursos automaticamente, de forma que em cada ponto no tempo, os recursos disponíveis correspondam à demanda atual, tão próxima quanto possível". Elasticidade é uma característica que diferencia a computação em nuvem dos paradigmas de computação propostos anteriormente, tais como computação em grade. A adaptação dinâmica de capacidade, por exemplo, alterando o uso de recursos de computação, para atender a uma variação de carga de trabalho é chamado de "computação elástica". (pt) |
| dbo:wikiPageExternalLink | http://csrc.nist.gov/publications/nistpubs/800-145/SP800-145.pdf http://www.infosys.tuwien.ac.at/research/viecom/SYBL |
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| rdfs:comment | In cloud computing, elasticity is defined as "the degree to which a system is able to adapt to workload changes by provisioning and de-provisioning resources in an autonomic manner, such that at each point in time the available resources match the current demand as closely as possible". Elasticity is a defining characteristic that differentiates cloud computing from previously proposed computing paradigms, such as grid computing. The dynamic adaptation of capacity, e.g., by altering the use of computing resources, to meet a varying workload is called "elastic computing". (en) Na computação em nuvem, a elasticidade é definida como "o grau em que um sistema é capaz de adaptar-se a carga de trabalho através de provisionamento e desprovisionamento de recursos automaticamente, de forma que em cada ponto no tempo, os recursos disponíveis correspondam à demanda atual, tão próxima quanto possível". Elasticidade é uma característica que diferencia a computação em nuvem dos paradigmas de computação propostos anteriormente, tais como computação em grade. A adaptação dinâmica de capacidade, por exemplo, alterando o uso de recursos de computação, para atender a uma variação de carga de trabalho é chamado de "computação elástica". (pt) L'élasticité dans le cloud computing est la capacité de ce cloud à s'adapter aux besoins applicatifs le plus rapidement possible. Il existe plusieurs définitions selon les auteurs, certains considérant les notions de Scalability et d'élasticité comme identiques, d'autres comme étant distinctes. L'arrivée de tels systèmes distribués (voir Calcul distribué) entraîne forcément des problèmes techniques qu'il faut régler ou limiter.Au niveau économique, l'arrivée de l'élasticité a eu des impacts chez les clients et les fournisseurs de cloud. Les fournisseurs ont par exemple créé un système de paiement « pay-as-you-go » permettant de payer les ressources utilisées à la demande. Ainsi, un client peut louer un serveur sur une courte période et à la taille voulue. (fr) |
| rdfs:label | Elasticity (cloud computing) (en) Élasticité (cloud computing) (fr) Elasticidade (computação em nuvem) (pt) |
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