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Zorluk: KolayDeployment Strategies

A developer needs to deploy a new version of an application to an AWS Elastic Beanstalk environment. The application is for internal testing and can tolerate a brief period of service unavailability. The developer wants the deployment to be completed as quickly as possible without launching any new instances to keep costs at zero. Which deployment strategy meets these requirements?

  1. All-at-onceCevap
  2. B
    Immutable
  3. C
    Rolling with additional batch
  4. D
    Rolling

Cevap

All-at-once
The All-at-once deployment strategy is correct because it applies the update to all instances in the environment simultaneously. This results in service downtime during the deployment, but it requires no additional resource provisioning (keeping cost at zero) and completes the deployment in the shortest time possible.

Adım Adım Çözüm

1
Analyze the requirements from the deployment scenario.
The key constraints are: 1. Service unavailability (downtime) is acceptable. 2. The deployment must complete as quickly as possible. 3. Zero additional costs or new instances should be launched.
Identifying constraints helps filter out strategies that launch temporary instances or focus on zero-downtime at the expense of speed or cost.
2
Evaluate each deployment strategy against the constraints.
All-at-once causes downtime but requires zero new instances and is the fastest. Immutable and Rolling with additional batch launch new instances. Rolling takes longer and reduces serving capacity without using new instances.
Comparing strategies allows us to match the one that satisfies all constraints simultaneously.

Anahtar Kavram

Selecting the appropriate AWS Elastic Beanstalk deployment strategy based on cost, speed, and downtime constraints.
Tahmini Süre:1m 0s
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Deployment Strategies

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