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Zorluk: KolayHigh Availability, Scalability, and Elasticity

An online education platform hosts a live streaming webinar that attracts ten times the normal number of concurrent students. To maintain performance, the platform's cloud-hosted web servers automatically increase in number during the event, and then automatically decrease back to the baseline count once the webinar finishes.
Which cloud characteristic does this automatic adjustment of resources represent?

  1. A
    Scalability
  2. ElasticityCevap
  3. C
    Disaster recovery
  4. D
    Capital expenditure (CapEx)

Cevap

Elasticity
Elasticity is the characteristic that allows resources to automatically scale out (increase) and scale in (decrease) to match fluctuating workloads, minimizing costs when demand is low.

Adım Adım Çözüm

1
Analyze the resource behavior in the scenario.
The web servers are configured to automatically increase in number when user demand spikes and decrease when the demand subsides.
Understanding the dynamic and automated nature of the scaling is necessary to identify the specific cloud characteristic.
2
Match the behavior to the correct cloud definition.
The capability to dynamically scale resources up and down in response to demand fluctuations is defined as elasticity.
This confirms elasticity as the correct concept, distinguishing it from general scalability or high availability.

Anahtar Kavram

Elasticity is the ability of a system to dynamically allocate and deallocate resources in response to changing demand.
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High Availability, Scalability, and Elasticity

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