These tutorials target Micronaut Framework 3. Read, Guides for Micronaut Framework 4.

rabbitmq

RabbitMQ and the Micronaut Framework - Event-Driven Applications
Use RabbitMQ to communicate between your Micronaut applications.
Tags: rabbitmq, messaging
RabbitMQ RPC and the Micronaut Framework
Use RabbitMQ RPC to use request-reply pattern in your Micronaut applications.
Tags: rabbitmq, rpc, messaging