RabbitMQ में queues messages को तब तक रखती हैं जब तक consumers उन्हें process नहीं कर लेते — producers और consumers के बीच buffers के रूप में कार्य करती हैं। reliable messaging के लिए queue properties (durability, acknowledgments, आदि) को समझना महत्वपूर्ण है।
queues क्या करती हैं
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A QUEUE holds messages until a consumer takes them:
→ messages wait in the queue (a buffer) → decouples producer speed from consumer speed
→ consumers receive messages (push or pull), process them, and ACKNOWLEDGE
→ roughly FIFO (first-in, first-out) order
→ the buffer between producers and consumers (absorbs load, enables async)
प्रमुख queue properties
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DURABLE → the queue survives a broker RESTART (the queue definition persists)
(+ PERSISTENT messages → messages also survive restart → durability)
EXCLUSIVE → used by only one connection; deleted when that connection closes
AUTO-DELETE → deleted when the last consumer disconnects
TTL → messages (or the queue) can expire after a time
MAX LENGTH → limit queue size (drop/overflow when full)
→ configure based on durability and lifecycle needs