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Spring 5.0 Microservices - Second Edition by Rajesh R V

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Orchestration of microservices

Composability is one of the service design principles. This leads to confusion about who is responsible for the composing services. In the SOA world, ESBs are responsible for composing a set of fine-grained services. In some organizations, ESBs play the role of a proxy, and service providers themselves compose and expose coarse-grained services. In the SOA world, there were two approaches for handling such situations.

The first approach is orchestration, which is depicted in the following diagram:

In the orchestration approach, multiple services are stitched together to get a complete function. A central brain ...

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