What is Synchronous and Asynchronous mode of communication in
Java Interview Questions, Microservices interview questions.
Q) What is the Asynchronous and Synchronous mode of communication between Microservices?
Synchronous communication is a blocking call in which client blocks itself from doing anything else, till the response comes back.
In Asynchronous communication, client can move ahead with its work after making an asynchronous call. Therefore, client is not blocked.
In synchronous communication, a Microservice can provide instant response about success or failure. In real-time systems, synchronous service is very useful. In Asynchronous communication, a service has to react based on the response received in future.
Synchronous systems are also known as request/response based.
Asynchronous systems are event-based.
Synchronous Microservices are not loosely coupled.
Depending on the need and critical nature of business domain, Microservices can choose synchronous or asynchronous form of communication.
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