Asynchronous Communication between Microservices

We have just reviewed synchronous communication between microservices and the pros and cons of that method. Now, we will take a look at its opposite counterpart, asynchronous communication.

Synchronous communication is needed at times and, based on the operation being carried out, can be unavoidable. It does introduce potentially long wait times as well as potential break points in certain operations. At this point, it is important to properly assess the operation and decide whether immediate feedback from an additional service is required to continue. Asynchronous communication means that we send data to the next service but do not wait for a response. The user will be under the impression that the operation was completed, but the actual work is being done in the background.

From that review, it is obvious that this method of communication cannot always be used but is necessary to implement certain flows and operations efficiently...