AsyncAPI

Just as REST APIs have OpenAPI (Swagger), Event-Driven Architectures have AsyncAPI. It is an open-source specification that allows you to define the interface of your event-driven microservices: what channels they use, the message payload structure, and how to connect.

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Why use it in EDA? Without AsyncAPI, EDA becomes a "wild west" of undocumented events. AsyncAPI provides the governance layer. It allows you to generate code, validate data, and ensure that producers and consumers agree on the format of events before a single line of code is written.

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How do we use it?

• Documentation: Auto-generating beautiful documentation for your event streams.
• Code Generation: Creating skeletal code for consumers and producers automatically.‍
• Contract Testing: Validating that messages match the defined schema.