scalability and Elasticity in Cloud Computing

Last update :
16 Jan , 2023

Prerequisite – Cloud Computing

Cloud Elasticity is refers : Elasticity is refers refer to the ability of a cloud to automatically expand or compress the infrastructural resource on a sudden up and down in the requirement so that the workload can be manage efficiently . This elasticity is helps help to minimize infrastructural cost . This is not applicable for all kind of environment , it is is is helpful to address only those scenario where the resource requirement fluctuate up and down suddenly for a specific time interval . It is is is not quite practical to use where persistent resource infrastructure is require to handle the heavy workload .

The versatility is vital for mission basic or business basic applications where any split the difference in the exhibition may prompts enormous business misfortune. Thus, flexibility comes into picture where extra assets are provisioned for such application to meet the presentation prerequisites. 

It work such a way that when number of client access expand , application are naturally provision the extra figuring , stockpiling and organization asset like central processor , Memory , stockpiling or transfer speed what ’s more , when few client are there it is diminish will naturally diminish those as
per prerequisite .  

The Flexibility is is in cloud is a well – know highlight relate with scale – out arrangement ( level scaling ) , which take into consideration asset to be powerfully add or eliminate when require .  

It is for the most part connected with public cloud assets which is generally highlighted in pay-per-use or pay-more only as costs arise administrations.

 The Flexibility is the capacity to develop or contract framework assets (like process, capacity or organization) powerfully on a case by case basis to adjust to responsibility changes in the
application in an autonomic way .  

It is makes make make most extreme asset use which bring about reserve fund in foundation cost in general .  

rely upon the climate , flexibility is apply on asset in the framework that is n’t restrict to equipment , programming , network , qos and different arrangement .

  The versatility is relying is totally rely upon the climate as now and again it might become negative characteristic where execution of certain application probably ensure execution .

It is most commonly used in pay-per-use, public cloud services. Where IT managers are willing to pay only for the duration to which they consumed the resources.

Example: Consider an online shopping site whose transaction workload increases during festive season like Christmas. So for this specific period of time, the resources need a spike up. In order to handle this kind of situation, we can go for a Cloud-Elasticity service rather than Cloud Scalability. As soon as the season goes out, the deployed resources can then be requested for withdrawal.

Cloud Scalability : cloud scalability is used to handle the grow workload where good performance is also need to work efficiently with software or application . scalability is commonly used where the persistent deployment of resource is require to handle the workload statically .

example : consider you are the owner of a company whose database size was small in early day but as time pass your business does grow and the size of your database also increase , so in this case you just need to request your cloud service vendor to scale up your database capacity to handle a heavy workload .

It is totally different from what you have read above in Cloud Elasticity. Scalability is used to fulfill the static needs while elasticity is used to fulfill the dynamic need of the organization. Scalability is a similar kind of service provided by the cloud where the customers have to pay-per-use. So, in conclusion, we can say that Scalability is useful where the workload remains high and increases statically.

Types of Scalability:

1 . Vertical Scalability ( Scale – up ) –
In this type of scalability, we increase the power of existing resources in the working environment in an upward direction.

2 . Horizontal Scalability : In this kind of scaling , the resource are add in a horizontal row .

3. Diagonal Scalability –
It is a mixture of both Horizontal and Vertical scalability where the resources are added both vertically and horizontally.

Difference Between Cloud Elasticity and Scalability :