What is the purpose of the AWS SQS API?

To programmatically interact with Amazon SQS for creating, managing, sending, and receiving messages.

What is the command to create a FIFO queue using AWS CLI?

aws sqs create-queue --queue-name MyQueue.

What is the advantage of using AWS SQS?

It provides a locking mechanism for messages during processing, allowing concurrent message handling.

What is long polling in Amazon SQS?

A feature that allows the queue to wait for a message to arrive instead of returning an empty response.

What are dead-letter queues in Amazon SQS?

Queues that capture messages that cannot be processed successfully after a certain number of attempts.

What is the role of a consumer in AWS SQS?

A consumer retrieves messages from the queue for processing.

What is the visibility timeout in AWS SQS?

A period during which a message is not visible to other consumers after being retrieved.

What is the difference between AWS SQS and AWS SNS?

SQS is a message queuing service, while SNS is a publish/subscribe service.

What is the purpose of message deduplication in FIFO queues?

To prevent the same message from being processed more than once within a 5-minute window.

What is the use case for batch processing with SQS?

Managing workloads that require data processing, such as data transfer and report production.

How does SQS support decoupled microservices?

By allowing services to communicate asynchronously without needing to know the details of the recipient.

What is the significance of message grouping in FIFO queues?

It ensures that related messages are processed in order while allowing different groups to be processed simultaneously.

What is the command to send a message to an SQS queue using AWS CLI?

aws sqs send-message --queue-url --message-body .

What is the command to delete a message from an SQS queue using AWS CLI?

aws sqs delete-message --queue-url --receipt-handle .

What is the purpose of the AWS SQS CLI?

To interact with SQS directly from the command line for managing queues and messages.

What is the role of producers in AWS SQS?

Producers send messages to the queue.

What is the key feature of standard queues regarding message delivery?

Messages might be delivered more than once.

What is the benefit of using SQS for order processing in e-commerce?

It allows multiple workers to process orders in parallel, ensuring timely fulfillment.

What is the purpose of AWS SQS pricing models?

To charge based on the number of messages sent or received, regardless of message size.

What is the significance of the 'At Least Once Delivery' feature in standard queues?

It ensures that messages are delivered at least once, but may be delivered multiple times.

What is the role of Amazon CloudWatch in relation to SQS?

To monitor various metrics such as queue length and message age.

What is the purpose of the 'ReceiveMessage' function in the SQS API?

To retrieve messages from the queue.

What is the purpose of the 'DeleteMessage' function in the SQS API?

To remove processed messages from the queue.

What is the benefit of using SQS for notifications?

It allows events in one component to trigger messages that can be processed by other components.

What is the command to pull messages from an SQS queue using AWS CLI?

aws sqs receive-message --queue-url .

What is the importance of message ordering in FIFO queues?

It ensures that messages are processed in the exact sequence they were sent.

What is the purpose of the AWS SQS CLI commands?

To automate tasks and manage queues without using the AWS Management Console.

What is the significance of the 'Batch Operations' feature in the SQS API?

To perform multiple actions (send, delete) in a single call.

What is the role of the queue in AWS SQS architecture?

It acts as a holding pool for messages sent by producers and retrieved by consumers.

What is the benefit of using SQS for real-time data ingestion?

It allows high-velocity logging or metrics collection without relying on message order.

What is the purpose of the 'SetQueueAttributes' command in the SQS CLI?

To modify the properties of the queue.

What is the significance of the 'Best-Effort Ordering' feature in standard queues?

It attempts to preserve order but may deliver messages out of order.

What is the role of the AWS Management Console in relation to SQS?

It provides a graphical interface for managing SQS queues and messages.

What is the purpose of the 'VisibilityTimeout' attribute in SQS?

To control how long a message remains invisible to other consumers after being retrieved.

What is the benefit of using SQS for notifications in applications?

It allows for real-time updates and alerts to be sent to various components.

What is the significance of the 'Exactly-Once Delivery' feature in FIFO queues?

It prevents duplicate messages from being delivered.

What is the role of the AWS SQS service in building fault-tolerant applications?

It enables decoupling and asynchronous processing, enhancing application resilience.

What is the command to modify the properties of an SQS queue using AWS CLI?

aws sqs set-queue-attributes --queue-url --attributes .

What is the purpose of the 'SendMessage' function in the SQS API?

To send a message to the queue.

What is the significance of the 'Message Grouping' feature in FIFO queues?

It allows related messages to be processed in order while enabling parallel processing of different groups.

AWS Simple Queue Service (SQS) Overview Flashcards

Student preview

75 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What does SQS stand for?

Back

Simple Queue Service.

2.

FLASHCARD QUESTION

Front

What is the primary function of AWS SQS?

Back

To enable web service applications to quickly and reliably queue messages.

3.

FLASHCARD QUESTION

Front

How does AWS SQS work?

Back

It offers asynchronous message-based communication between services, allowing messages to be queued and processed later.

4.

FLASHCARD QUESTION

Front

What are the two types of queues in AWS SQS?

Back

First-in-first-out (FIFO) and Standard Queue.

5.

FLASHCARD QUESTION

Front

What is a FIFO queue?

Back

A queue where the order of messages is preserved, ensuring that the oldest message is processed first.

6.

FLASHCARD QUESTION

Front

What is a Standard Queue?

Back

A queue where messages are delivered randomly and may be delivered multiple times.

7.

FLASHCARD QUESTION

Front

What is the maximum size of a message in SQS?

Back

256 kilobytes.

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