olemus
programmimoodul, mis edastab sõnumeid
rakenduste või protokollide vahel
=
an intermediary program that applications and services use to communicate with each other to exchange information

ülevaateid
https://www.techopedia.com/definition/16959/message-broker

https://en.wikipedia.org/wiki/Message_broker

https://docs.oracle.com/cd/E13214_01/wli/docs102/overview/mb.html

https://www.upsolver.com/blog/comparing-message-brokers-and-event-processing-tools

https://hackernoon.com/introduction-to-message-brokers-part-1-apache-kafka-vs-rabbitmq-8fd67bf68566

näiteid
https://www.rabbitmq.com/