Chat Application using Java/ Spring Boot + WebSocket + RabbitMQ

We are interested in adding a chat feature in an existing Web Application in Spring boot/Postgrel
We want to develop a chat module using websocket and or adding RabbitMQ to to enable chat on the web
We have chat template ready in HTML
Some idea for review
https://www.dariawan.com/tutorials/spring/build-chat-application-using-spring-boot-and-websocket/
https://www.javainuse.com/spring/boot-websocket-chat
https://o7planning.org/10719/create-a-simple-chat-application-with-spring-boot-and-websocket
or you can use your own idea
the application will be added in existing web app on member area