Rabbit MQ is a message broker that allows for asynchronous messaging between applications and services. It uses exchanges, queues, bindings, and routing keys to deliver messages from producers to consumers. There are different types of exchanges like direct, topic, and fanout that determine how messages are routed from producers to queues. Rabbit MQ supports multiple protocols and client libraries for different programming languages. It provides reliable messaging with acknowledgements, flexible routing, clustering for high availability, and tracing capabilities.

1. Rabbit MQ
What is Messaging Queue?
Post return or neighbourhood deliver

2. Producer
Consumer
Exchange
Rabbit MQ (Message Broker)
Queue1 Binding Key
Routing Key
Queue2
Queue3
Consumer
Consumer
Binding Key
Binding Key

3. Direct
Topic
Fanout
Binding key and Routing key should match for producer and consumer
All known queues in Exchange
Same like Direct but delivers to multiple consumers
Types of Exchanges
Client Library for Rabbit MQ
• Python  Pika
• Java  RabbitMQ Java Client
• .NET  RabbitMQ .Net Clinet
• Ruby  Bunny

4. Protocols
1. AMQP (Advanced Messaging Queue Protocol ) – It is the core protocol supported by RabbitMQ
and it will be available in binary protocol which makes every programming language to use
their own library
2. STOMP (Simple Text Oriented Messaging Protocol ) – It is text based protocol
3. MQTT (MQ Telemetry Transport) – Binary Protocol emphasising lightweight messaging

5. Advantages:
• Asynchronous Messaging(Can run both application code and process independently)
• Support Multiple protocols
• Reliability (deliver acknowledgement, publisher confirm )
• Flexible routing (Several built in exchange types available, even we can create our own plugin)
• Clustering (Several rabbitMQ servers on a local network can be grouped together to form a single broker)
• High Available Queue (Due to mirror concept in cluster, evenafter hardware failure message queue will be
Available.
• Many clients
• Tracing (For monitoring queue misbehaving)
• Plugin