What is Message Queue
Asynchronous messaging between systems
Message Queue is an asynchronous communication mechanism between system components where messages are stored in a queue until processed by the receiver.
How It Works
- Sender (producer) places message in queue
- Queue stores message until processing
- Receiver (consumer) retrieves and processes message
- Acknowledgment of successful processing
Advantages
- Asynchronicity — sender doesn't wait for response
- Decoupling — component independence
- Buffering — smoothing peak loads
- Reliability — guaranteed message delivery
Usage Patterns
- Point-to-Point — one message to one receiver
- Publish-Subscribe — one message to many subscribers
- Request-Reply — request expecting response
- Dead Letter Queue — handling failed messages
Popular Solutions
- RabbitMQ — universal broker
- Apache Kafka — stream processing
- Amazon SQS — cloud service
- Redis Streams — fast queue