AWS认证SAA-C03每日一题

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【SAA-C03助理级解决方案架构师认证】

A company has an application that ingests incoming messages.These messages are then quickly consumed by dozens of other applications and microservices. The number of messages varies drastically and sometimes spikes as high as 100 000 each second The company wants to decouple the solution and increase scalability. Which solution meets these requirements?
A :   Persist the messages to Amazon Kinesis Data Analytics. All the applications will read and process the messages.
B :   Deploy the application on Amazon EC2 instances in an Auto Scaling group,which scales the number of EC2 instances based on CPU metrics
C :   Write the messages to Amazon Kinesis Data  Streams with a single shard. All applications will read from the stream and process the messages.
D :   Publish the messages to an Amazon Simple Notification Service(Amazon SNS) topic with one or more Amazon Simple Queue Service(Amazon SQS) subscriptions All applications then process the messages from the queues.
正确答案   D
题目解析:
D: By default, FIFO queues support up to 30 messages per second with batching or up to 300 messages per second(300 sendreceiveor delete operations per second)without batching. So with batching it solved the question and option D also mentions “multiple”. So D is the right choice