Rabbitmq pubsub

Simple domonstration of how to use rabbitMQ for publish and subscribe events or messages.

🧩 Why RabbitMQ?

• Decouples producers and consumers
• Handles message bursts with queue buffering
• Provides configurable delivery guarantees
• Supports multiple consumers via exchange types (direct, topic, fanout)

🔁 Message Delivery Modes RabbitMQ supports different message delivery guarantees:

1. At most once Messages may be lost but never redelivered. High-frequency, non-critical telemetry.
2. At least once Messages are retried until acknowledged. Reliable event delivery (e.g., billing, transactions).
3. Exactly once Each message processed once (usually simulated via idempotency). Rare; costly to implement.

Setup RabbitMQ on docker as follows.

RabbitMQ on docker

Using RabbmitMQ management so that we can get the RabbitMQ UI in localhost:15672

docker run -it --rm --name rabbitmq -p 5672:5672 -p 15672:15672 rabbitmq:3.12-management

Run the projects

There are two projects in this solution. Run the subscriber project first and then run the publisher.

Enjoy!