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Zorluk: OrtaDeployment Strategies

A developer is planning the deployment strategy for a critical web application hosted on AWS Elastic Beanstalk. The application is highly sensitive to performance degradation, so the deployment process must maintain 100%100\% of the existing instance capacity at all times. Additionally, if the new version fails post-deployment tests, the developer must be able to roll back to the previous version almost instantly. Which two Elastic Beanstalk deployment strategies or methods will satisfy these requirements? (Select two.)

  1. Immutable deploymentCevap
  2. Blue/Green deployment via environment URL swapCevap
  3. C
    Rolling deployment
  4. D
    Rolling with additional batch deployment
  5. E
    All-at-once deployment

Cevap

Immutable deployment and Blue/Green deployment via environment URL swap
Immutable deployments and Blue/Green deployments via environment URL swapping both maintain 100%100\% of the existing application capacity during deployment. They also provide a rapid rollback path: immutable deployments roll back by terminating the new Auto Scaling group, while Blue/Green deployments roll back by swapping the CNAME records back.

Adım Adım Çözüm

1
Analyze the capacity requirement.
The application must maintain 100%100\% of its existing capacity during the deployment. This eliminates strategies that take instances offline without replacing them first, such as rolling and all-at-once.
To prevent performance degradation during the deployment window.
2
Evaluate the rollback requirements.
The deployment must support a rapid, near-instant rollback in case of failure. This rules out rolling with additional batch, which requires a new rolling deployment of the older version to revert.
To minimize the duration of any potential outage or failure.
3
Identify the compliant strategies.
Immutable deployments maintain capacity by launching a parallel Auto Scaling group and roll back instantly by terminating it. Blue/Green deployments maintain capacity in a separate environment and roll back instantly by swapping the CNAMEs back.
Both strategies meet the full capacity and near-instant rollback constraints.

Anahtar Kavram

Evaluating Elastic Beanstalk deployment policies based on capacity and rollback speed trade-offs.
Tahmini Süre:1m 30s
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Konular

Deployment Strategies

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