A Dead Letter Queue is a special queue in message queue systems that holds messages (payload) that cannot be delivered to their intended recipients due to various reasons.
These reasons can include:

• Incorrect message formatting
• Network errors
• System failures
• Application-level errors
DLQs serve several important purpose.

1. Message Preservation: They prevent loss of messages/payload that fail processing, allowing for later analysis or retry.
2. System Stability: By isolating problematic messages/payload, DLQs prevent failures from affecting the main message flow.
3. Debugging: DLQs provide a centralised location for developers to inspect and diagnose issues with failed messages.
#deadletterqueue #queuemanagement