Discussion on Microservices Integration

Discussion on Microservices Integration

Microservices is a distributed system pattern and components need to communicate through the network.

If communication data includes internal technical details of participating components, the system loses the property of loose-coupling.

If a change in one service causes changes in many other services, we lose the property of high-cohesion.

An unreliable network and added latency for data communication dictate choices for services integration.

There are two major types:

  • Direct Communication
  • Event-based, asynchronous communication

Direct communication is a request/response-based. It is useful for low-latency and immediate consumption scenarios. It is prone to failures (server unresponsive, network latency) and hence caller/clients need to retry. This communication is not easily extensible and soon become brittle.

Asynchronous mode is a “fire and forget” approach. An event is generated and it is up to the consumers to handle it. This model scales very well: the publisher and consumers have no coupling. Both are independently deployable. However, it is hard to monitor the status of each event handler.


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  One thought on “Discussion on Microservices Integration

  1. July 4, 2020 at 10:39 PM

    Which is best among these two approaches ?


    • July 16, 2020 at 11:43 PM

      I prefer Asynchronous mode for most of the general communication. It’s managed (usually an MQ), quite reliable, and retains loose coupling in the design. Overall, it makes your service more reliable.


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