[Solved] What is wrong with this Spring Boot RabbitMQ listener method for handling dead letter messages?... What is wrong with this Spring Boot RabbitMQ listener method for handling dead letter messages? | Spring Boot

Spring Boot - Messaging

What is wrong with this Spring Boot RabbitMQ listener method for handling dead letter messages? @RabbitListener(queues = "dlq") public void handleDlq(String message) { // process dead letter message throw new RuntimeException("error"); } Options:

ADead letter queue cannot have listeners

BListener method must return a boolean

CThrowing exception causes message to be requeued infinitely

DMethod parameter type should be Message, not String

Step-by-Step Solution

Solution:

Step 1: Analyze exception in DLQ listener
Throwing an exception in DLQ listener causes message rejection and requeue if requeue is true.
Step 2: Understand infinite requeue risk
Without special handling, this leads to infinite retries and possible message flooding.
Final Answer:
Throwing exception causes message to be requeued infinitely -> Option C
Quick Check:
Exception in DLQ listener = infinite requeue risk [OK]

Quick Trick: Avoid exceptions in DLQ listener to prevent infinite retries [OK]

Common Mistakes:

Thinking DLQ can't have listeners
Believing method signature is wrong
Ignoring requeue behavior

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More Spring Boot Quizzes

What is wrong with this Spring Boot RabbitMQ listener method for handling dead letter messages?

Step 1: Analyze exception in DLQ listener

Step 2: Understand infinite requeue risk

Final Answer:

Quick Check:

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