What are the differences between dead letter queues and retry logic?
Dead letter queues (DLQs) are used to store messages that cannot be processed, while retry logic attempts to process messages again before sending them to a DLQ.
When should I use a dead letter queue instead of just retrying?
Use a DLQ when messages consistently fail after several retries, indicating a deeper issue that needs addressing.
Can you give an example of a scenario for each?
Sure! For retry logic, imagine a temporary network issue; the message can be retried. For a DLQ, consider a message with invalid data that keeps failing.
How do I implement a dead letter queue in my application?
You can implement a DLQ by configuring your message broker to redirect failed messages to a specific queue after a set number of retries.
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