Question

An investment bank has a distributed batch processing application which is hosted in an Auto Scaling group of Spot EC2 instances with an SQS queue. You configured your components to use client-side buffering so that the calls made from the client will be buffered first and then sent as a batch request to SQS. What is a period of time during which the SQS queue prevents other consuming components from receiving and processing a message

Answer 1

Answer: Visibility timeout

Explanation:

The period of time during which the SQS queue prevents other consuming components from receiving and processing a message is known as the visibility timeout.

It is the length of time when a message will be hidden after such message has been grabbed by a consumer. It is essential as it prevents others from processing such message again.