You’re given the task of writing a microservice AND providing a documentation in OpenAPI format. You already know that there are two main approaches:

  • code-first : write the code, using OpenAPI annotations, and then generate the OpenAPI document
  • design-first : write the OpenAPI document (a.k.a. the openapi.yaml file) and then generate the code

This article reviews the code first approach, the design-first approach will follow in a second article at a later time.

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Peter Steiner

Software Developer and Opinionated Citizen