Message broker choice

[luca-bassoricci]

We are starting to add a message broker to intra-service messaging (3/4 services talking each other for data propagation and few other information).
Our first choice was RabbitMQ over Kafka due

• simplicity
• good dispatching flexibility
• web UI

but we have some concerns about that choice especially bacause

• it looks like Quarkus has an overral better support for Kafka
• Kafka has a better (de)serialization support
• Kafka has Jackson support using ObjectMapperSerializer, but I haven't found the possibility to reuse application-defined ObjectMapper with RabbitMQ

We are still looking for a tool for events documentation (in addition to Javadoc documentation).
Anyone can give me some advice about our broker choice?

Any help is truly appreciate.
Thanks in advance to all.
Luca.