A dead letter queue (DLQ) shine wadda saƙonni suka tafi lokacin da ba a iya aiwatarsu ba ko suna bugi wasu sharadi (turawa, tsare waji, jeri mai cike). DLQs suna rigaba saƙonni masu matsala daga rashin asussu ko takarda aiki, suna ba da dama ga bincike daga gida da magance jiya.
Abin da jerin saƙonni marasa rai yake
DEAD LETTER QUEUE → a queue that receives messages that couldn't be delivered/processed
normally:
→ messages are "dead-lettered" (routed to the DLQ) when they:
- are REJECTED/nacked (consumer can't process them) without requeue
- EXPIRE (message TTL exceeded)
- exceed the queue's MAX LENGTH (overflow)
→ the DLQ collects these for inspection/handling instead of losing them
→ a "holding area" for problematic messages
