Which solution will meet these requirements?

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A company runs a web application on Amazon EC2 instances in an Auto Scaling group behind an Application Load Balancer that has sticky sessions enabled.The web server currently hosts the user session state.The company wants to ensure high availability and avoid user session state loss in the event of a web server outage.

Which solution will meet these requirements?

Use an Amazon ElastiCache for Memcached instance to store the session data. Update the application to use ElastiCache for Memcached to store the session state.

Use Amazon ElastiCache for Redis to store the session state. Update the application to use ElastiCache for Redis to store the session state.

Use an AWS Storage Gateway cached volume to store session data. Update the application to use AWS Storage Gateway cached volume to store the session state.

Use Amazon RDS to store the session state. Update the application to use Amazon RDS to store the session state.

Explanations:

ElastiCache for Memcached is not a fully persistent storage solution, so it might not provide the reliability needed for session state during outages.

ElastiCache for Redis is a managed, highly available, in-memory data store that supports persistence and can handle session state across server failures.

AWS Storage Gateway cached volumes are designed for file storage, not for session data management, making them unsuitable for this use case.

Amazon RDS is a relational database service, which is overkill for session state management and may introduce unnecessary complexity and latency.

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