Your team has a Memcached cluster defined in AWS. After using the solution, you can see a large number of evictions based on the recent cloudwatch metrics data. Which of the following can be used to solve the issue of the increased number of evictions? Choose 2 answers from the options given below.

Answer options:

A.Add an additional node to the cluster.
B.Change the underlying volume for the cluster to use Provisioned IOPS.
C.Consider increasing the node size.
D.Consider restarting the cluster.

Correct Answers: A and C
The AWS Documentation mentions the following.
Also, if you are experiencing evictions with your cluster, it is usually a sign that you need to scale up (use a node that has a larger memory footprint) or scale out (add additional nodes to the cluster) in order to accommodate the additional data. An exception to this rule is that you are purposefully relying on the cache engine to manage your keys by means of eviction, also referred to as an LRU cache.
Option B is incorrect since this would not help with the evictions.
Option D is incorrect since this would cause all the cache data to be flushed out.
For more information on implementation for cache, please refer to the below URL-
https://aws.amazon.com/caching/implementation-considerations/