Message Queue

https://medium.com/free-code-camp/how-to-scale-microservices-with-message-queues-spring-boot-and-kubernetes-f691b7ba3acf
https://steady-snail.tistory.com/165
https://aws.amazon.com/ko/message-queue/
https://www.ibm.com/cloud/learn/message-queues
https://www.ibm.com/docs/en/ibm-mq/8.0?topic=overview-introduction-message-queuing
https://medium.com/must-know-computer-science/system-design-message-queues-245612428a22
https://www.cloudamqp.com/blog/what-is-message-queuing.html
https://medium.com/swlh/everything-you-need-to-know-about-message-queues-a-complete-guide-dbf190d001d7