What are the types of Microservice Communication?

There are two primary forms of communication between microservices.

Request-Response: One service invokes another service by making an explicit request, usually to store or retrieve data. The service then expects a response: either a resource or an acknowledgement.

Observer: Event based, implicit invocation where one service publishes an event and one or more observers that were watching for that event respond to it by running logic asynchronously, outside the awareness of the producer of the event.

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