Creating asynchronous send-receive communication

Spring Boot 2.0 directly supports the asynchronous handling of send and receive messages with asynchronous results. Some microservices purposely implement this kind of exchange mechanism to avoid traffic and blocking problems when several of them send request messages at the same time to an exchange with one routing key. Moreover, this solution is most likely favored due to the presence of client-based callbacks that give microservices resiliency when the consumer is down or has crashed.

Getting started

Again, open ch11-ipc-emp and ch11-ipc-login, and add the following request and reply queues, @RabbitListener response transactions, and client services that will showcase the use of AsyncRabbitTemplate.

How to do it...

Let's build non-blocking and message-driven services using the following steps:

1. Let's first modify consumer of the message or the source of the response transaction, which is the Login Microservice. Add a @Configuration class that...