A Developer Has Written an Application That Writes Data to Amazon

question 77

Multiple Choice

A developer has written an application that writes data to Amazon DynamoDB. The DynamoDB table has been configured to use conditional writes. During peak usage times, writes are failing due to a ConditionalCheckFailedException error. How can the developer increase the application's reliability when multiple clients are attempting to write to the same record?

• A) Write the data to an Amazon SNS topic.
• B) Increase the amount of write capacity for the table to anticipate short-term spikes or bursts in write operations.
• C) Implement a caching solution, such as DynamoDB Accelerator or Amazon ElastiCache.
• D) Implement error retries and exponential backoff with jitter.

---

Definitions:

Sequential Search

Sequential search is a search algorithm that checks each element in a list one by one until the desired element is found or the end of the list is reached.

Ordered List

An ordered list is a collection of elements arranged in a linear sequence according to some sortable property, such as numerical or lexicographical order.

Key Comparisons

The act of evaluating two keys during sorting or searching algorithms to determine their relative order.

Binary Search

Binary search is an efficient algorithm for finding a target value within a sorted array by repeatedly dividing the search interval in half.