Queue length limits in RabbitMQ - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set a maximum length of 1000 messages for the queue.

RabbitMQ

rabbitmqctl set_policy TTL "^queue_name$" '{"max-length": [1]' --apply-to queues

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

A1000

B5000

C100

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using 0 disables the limit, which is not the goal.

Setting too high a number may cause memory issues.

The max-length property limits the queue to 1000 messages.

2fill in blank

medium

Complete the code to declare a queue with a maximum length of 500 messages using the RabbitMQ management plugin.

RabbitMQ

rabbitmqadmin declare queue name=my_queue durable=true arguments='{"[1]":500}'

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

Ax-max-length

Bmax-length

Cmax_messages

Dqueue-length

Attempts:

3 left

💡 Hint

Common Mistakes

Using max-length without the x- prefix causes the setting to be ignored.

The argument x-max-length sets the maximum number of messages the queue can hold.

3fill in blank

hard

Fix the error in the policy JSON to correctly limit the queue length to 2000 messages.

RabbitMQ

rabbitmqctl set_policy limit_length ".*" '{"[1]": 2000}' --apply-to queues

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

Aqueue-max-length

Bx-max-length

Cmax_length

Dmax-length

Attempts:

3 left

💡 Hint

Common Mistakes

Using x-max-length causes the policy to be ignored.

The correct key for queue length limit in policies is max-length.

4fill in blank

hard

Fill both blanks to declare a queue with a max length of 300 and a max priority of 10.

RabbitMQ

rabbitmqadmin declare queue name=priority_queue durable=true arguments='{"[1]":300, "[2]":10}'

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

Ax-max-length

Bx-max-priority

Cmax-length

Dmax-priority

Attempts:

3 left

💡 Hint

Common Mistakes

Using keys without x- prefix will not apply the settings.

x-max-length sets the queue length limit, and x-max-priority sets the max priority.

5fill in blank

hard

Fill all three blanks to create a policy named 'limit_policy' that applies to all queues, setting max length to 1500 and overflow behavior to drop oldest messages.

RabbitMQ

rabbitmqctl set_policy [1] ".*" '{"[2]":1500, "[3]":"drop-head"}' --apply-to queues

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

Alimit_policy

Bx-max-length

Coverflow

Dmax-length

Attempts:

3 left

💡 Hint

Common Mistakes

Using x-max-length instead of max-length.

Using x-overflow instead of overflow.

The policy name is limit_policy. The key max-length sets the max messages, and overflow controls overflow behavior.