[Solved] You have this code snippet: connection = pika.BlockingConnection() channel = connection.channel() channel.close() channel.... | RabbitMQ

RabbitMQ - Performance Tuning

You have this code snippet:

connection = pika.BlockingConnection()
channel = connection.channel()
channel.close()
channel.basic_publish(exchange='', routing_key='test', body='Hello')

What is the problem here?

ARouting key cannot be empty

BConnection is not closed properly

CPublishing on a closed channel causes an error

DExchange name is missing

Step-by-Step Solution

Solution:

Step 1: Identify channel state before publishing
The channel is closed before calling basic_publish.
Step 2: Understand effect of publishing on closed channel
Publishing on a closed channel raises an error because the channel is not active.
Final Answer:
Publishing on a closed channel causes an error -> Option C
Quick Check:
Closed channel publish error = D [OK]

Quick Trick: Do not publish after closing channel; open a new one [OK]

Common Mistakes:

MISTAKES

Ignoring channel closed state
Thinking connection closure is the issue
Confusing exchange and routing key requirements

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More RabbitMQ Quizzes

You have this code snippet:

Step 1: Identify channel state before publishing

Step 2: Understand effect of publishing on closed channel

Final Answer:

Quick Check:

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