Should microservices talk to each other directly?

Question

I would generally advise against having microservices do synchronous communication with each other, the big issue is coupling, it means the services are now coupled to each other, if one of them fails the second is now fully or partially disfunctional. 16 окт. 2016 г.

Should microservices communicate with each other?

Because microservices are distributed and microservices communicate with each other by inter-service communication on network level. Each microservice has its own instance and process. Therefore, services must interact using an inter-service communication protocols like HTTP, gRPC or message brokers AMQP protocol.

Can 2 microservices call each other?

There are two basic messaging patterns that microservices can use to communicate with other microservices. Synchronous communication. In this pattern, a service calls an API that another service exposes, using a protocol such as HTTP or gRPC.

How does 2 microservices communicate with each other?

The two commonly used protocols are HTTP request/response with resource APIs (when querying most of all), and lightweight asynchronous messaging when communicating updates across multiple microservices.

How microservices communicate with each other asynchronous?

Microservices that communicate in an asynchronous manner can use a protocol such as AMQP to exchange messages via a message broker. The intended service receives the message in its own time. The sending service is not locked to the broker. It simply fires and forgets.

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