You Are Using ElastiCache Memcached to Store Session State and Cache

question 521

Multiple Choice

You are using ElastiCache Memcached to store session state and cache database queries in your infrastructure. You notice in CloudWatch that Evictions and GetMisses are Doth very high. What two actions could you take to rectify this? (Choose two.)

• A) Increase the number of nodes in your cluster
• B) Tweak the max_item_size parameter
• C) Shrink the number of nodes in your cluster
• D) Increase the size of the nodes in the duster

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Definitions:

Poisson Approximation

A mathematical method for estimating the likelihood of a certain number of occurrences taking place within a set time period.

Uniform Density

A type of distribution in which all outcomes are equally likely within a specified range, characterized by a constant probability density function.

Probability

A measure of the likelihood that a particular event will occur, expressed as a number between 0 and 1.

Poisson Approximation

A statistical method used to approximate the probabilities of rare events in a fixed interval of time or space, assuming events occur with a known constant rate independently of the time since the last event.