The developer team is planning to create a new distributed application. Most of the messages between the application components have a size larger than 256 KB. The messages need to be polled periodically & buffered so that other components can retrieve and process. Which of the following services would you use to design the messaging system?

Answer options:

A.Use Amazon Kinesis Streams.
B.Use Amazon SNS Extended Client Library.
C.Use Amazon SQS Extended Client Library.
D.Use Amazon MQ FIFO.

Correct Answer – C
AWS SQS can be used for distributed applications for queuing messages between applications which will decouple components. AWS SQS performs periodic polling of messages between components. For message size larger than 256 KB, Amazon SQS Extended Client Library for Java can be used to reference message payload stored in Amazon S3.
Option A is incorrect as Amazon Kinesis Streams will be more effective in the real-time streaming of data.
Option B is incorrect as Amazon SNS is a push notification messaging service. In this case client is looking for a polling message AWS SQS is a better option.
Option D is incorrect as AWS MQ is too heavy for this scenario. SQS can meet the requirements and be more cost-efficient.
For more information on the use case for Amazon SQS, refer to the following URL-
https://aws.amazon.com/sqs/faqs/