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Discussion on: How To Build an Event Sourcing Pattern in Rails from Scratch

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Matías Hernán García

Great article!

Dumb question. Probably this is left out due that the focus is about showing how an evented system can be built.

  1. What about validations at the moment of running the create event?
  2. I mean, what if a user submits, twice, to create a given user? How they will get feedback that that went wrong?