Answer is definitely CD. Memcached does not support multi-az deployments which is required for HA as stated in the question. Performance was not necessarily in the question, hence, multi-threading is not required.
CD for sure
B. Create an Amazon ElastiCache for Memcached data store.
D. Enable Multi-AZ for the data store.
To implement a caching service with high availability, you can use Amazon ElastiCache, which is a fully managed caching service compatible with both Memcached and Redis. For high availability, you should enable Multi-AZ (Availability Zone) support.
#B. Create an Amazon ElastiCache for Memcached data store:
Memcached is a widely used caching system, and ElastiCache for Memcached is suitable for simple caching scenarios. Choose this option if Memcached meets your caching requirements.
#D. Enable Multi-AZ for the data store:
Enabling Multi-AZ for Amazon RDS or Amazon ElastiCache ensures that the service is deployed across multiple Availability Zones, providing redundancy and high availability. In case of a failure in one Availability Zone, the service continues to operate in another.
The two options that will best meet the requirements are:
B. Create an Amazon ElastiCache for Memcached data store.
D. Enable Multi-AZ for the data store.
Summary:
Creating an Amazon ElastiCache Memcached data store will provide a caching layer in front of the RDS DB instance. This will improve performance by caching frequently accessed data.
Enabling Multi-AZ for the RDS DB instance will maintain high availability. The Multi-AZ configuration will replicate the DB across Availability Zones, so if one AZ fails, the DB will still be accessible from the other AZ.
Answer:B,D
A voting comment increases the vote count for the chosen answer by one.
Upvoting a comment with a selected answer will also increase the vote count towards that answer by one.
So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.
Liongeek
Highly Voted 1 year, 11 months agohenro4niger
Most Recent 9 months agor2c3po
10 months, 1 week agoalexiscloud
1 year agomichaldavid
1 year, 10 months agomarcelodba
1 year, 10 months ago