Why async processing decouples systems in HLD - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to show how a message queue helps decouple services.

HLD

service.send_message_to_queue([1])

Drag options to blanks, or click blank then click option'

Arequest_data

Bresponse_data

Cerror_log

Dsync_call

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing response_data or error_log which are not sent to the queue for processing.

The service sends request_data to the queue to decouple the sender from the receiver.

2fill in blank

medium

Complete the code to show how the consumer processes messages asynchronously.

HLD

while True:
    message = queue.[1]()
    process(message)

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Aacknowledge

Bsend

Cdelete

Dreceive

Attempts:

3 left

💡 Hint

Common Mistakes

Using send or delete which are not for receiving messages.

The consumer receives messages from the queue to process them asynchronously.

3fill in blank

hard

Fix the error in the code to ensure the producer does not wait for the consumer.

HLD

producer.send_request()
producer.[1]()  # Should not wait for response

Drag options to blanks, or click blank then click option'

Aprocess_response

Bcontinue_processing

Cwait_for_response

Dblock

Attempts:

3 left

💡 Hint

Common Mistakes

Using wait_for_response or block which cause synchronous waiting.

The producer should continue_processing without waiting, enabling asynchronous decoupling.

4fill in blank

hard

Fill both blanks to complete the asynchronous message handling code.

HLD

message = queue.[1]()
if message is not None:
    [2](message)

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Areceive

Bsend

Cprocess

Ddelete

Attempts:

3 left

💡 Hint

Common Mistakes

Using send instead of receive or delete instead of process.

The system receives a message and then processes it asynchronously.

5fill in blank

hard

Fill all three blanks to implement asynchronous task submission and handling.

HLD

def submit_task(task):
    queue.[1](task)

def worker():
    while True:
        task = queue.[2]()
        if task:
            [3](task)

Drag options to blanks, or click blank then click option'

Asend

Breceive

Cprocess

Dwait

Attempts:

3 left

💡 Hint

Common Mistakes

Using wait which blocks, or mixing send and receive incorrectly.

The submit_task function sends tasks to the queue. The worker receives tasks and processes them asynchronously.