Messaging & Queues · question
Q.04 of 38
What is the difference between a queue and a topic?
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Re-explain
Queue (Point-to-Point):
- One message is consumed by exactly one consumer
- Load balancing pattern
- Message is removed after consumption
- Example: Task distribution
Topic (Publish-Subscribe):
- One message can be consumed by multiple subscribers
- Broadcasting pattern
- Each subscriber gets a copy of the message
- Example: Event notifications
Queue: Producer → [Queue] → Consumer1 OR Consumer2
Topic: Producer → [Topic] → Consumer1 AND Consumer2 AND Consumer3
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