Your company plans to host a large donation website on Amazon Web Services (AWS). You anticipate a large and undetermined amount of traffic that will create many database writes. To be certain that you do no

t drop any writes to a database hosted on AWS.

Which service should you use?

A. Amazon RDS with provisioned IOPS up to the anticipated peak write throughput.

B. Amazon Simple Queue Service (SQS) for capturing the writes and draining the queue to write t

o the database.

C. Amazon ElastiCache to store the writes until the writes are committed to the database.

D. Amazon DynamoDB with provisioned write throughput up to the anticipated peak write throughput.

Explanation:

Amazon Simple Queue

Service (Amazon SQS) offers a reliable, highly scalable hosted queue for storing messages as they travel between computers. By using Amazon SQS, developers can simply move data between distributed application components performing different tasks, without

losing messages or requiring each component to be always available. Amazon SQS makes it easy to build a distributed, decoupled application, working in close conjunction with the Amazon Elastic Compute Cloud (Amazon EC2) and the other AWS infrastructure web

services.

What can I do with Amazon SQS?

Amazon SQS is a web service that gives you access to a message queue that can be used to store messages while waiting for a computer to process them. This allows you to quickly build message queuing applications th

at can be run on any computer on the internet. Since Amazon SQS is highly scalable and you only pay for what you use, you can start small and grow your application as you wish, with no compromise on performance or reliability. This lets you focus on buildi

ng sophisticated message-based applications, without worrying about how the messages are stored and managed. You can use Amazon SQS with software applications in various ways. For example, you can:

Integrate Amazon SQS with other AWS infrastructure web ser

vices to make applications more reliable and flexible.

Use Amazon SQS to create a queue of work where each message is a task that needs to be completed by a process. One or many computers can read tasks from the queue and perform them.

Build a microservice

s architecture, using queues to connect your microservices.

Keep notifications of significant events in a business process in an Amazon SQS queue. Each event can have a corresponding message in a queue, and applications that need to be aware of the event c

an read and process the messages.