In Amazon ElastiCache, the failure of a single cache node can have an impact on the availability of your application and the load on your back-end database while
ElastiCache provisions a replacement for the failed cache node and it get repopulated.
Which of the following is a solution to reduce this potential availability impact?
In Amazon ElastiCache, distributing your memory and compute capacity over a larger number of smaller cache nodes helps to reduce the potential availability impact. If a single cache node fails, the impact is minimized because the data and load can be spread over more nodes rather than having a few high capacity nodes, where the failure of a single node would have a larger impact on availability and load. Therefore, spreading the load across more nodes mitigates the risk associated with node failures.
B Explanation https://docs.aws.amazon.com/AmazonElastiCache/latest/mem-ug/nodes-select-size.html
B. HA - > wider, smaller to avoid a single point of failure
Answer is A
It's definitely not A...with fewer nodes the impact of a failure would be greater...it's definitely B...
https://jayendrapatil.com/tag/memcached/
https://jayendrapatil.com/tag/memcached/
It doesn't say memcached though
B is correct.
B. Spread your memory and compute capacity over a larger number of cache nodes, each with smaller capacity. Explanation: https://pegacert.com/vendor/aws/sop-c01/amazon-elasticache-failure-single-cache-node-impact-bf8f9 In Amazon ElastiCache, the number of cache nodes in the cluster is a key factor in the availability of your cluster running Memcached. The failure of a single cache node can have an impact on the availability of your application and the load on your back-end database while ElastiCache provisions a replacement for the failed cache node and it get repopulated. You can reduce this potential availability impact by spreading your memory and compute capacity over a larger number of cache nodes, each with smaller capacity, rather than using a fewer number of high capacity nodes. http://docs.aws.amazon.com/AmazonElastiCache/latest/UserGuide/CacheNode.Memcached.html
B is correct.
100% B
the question is not structured in correct english it makes no sense... the load on your back-end database while .... and it get repopulated.
B. Spread your memory and compute capacity over a larger number of cache nodes, each with smaller capacity.