---
title: "Discussion on \"Introducing Moment and Facet: Your Domain Model Deserves to Run Before Your Code Does\" | Hashnode"
description: "Discussion on \"Introducing Moment and Facet: Your Domain Model Deserves to Run Before Your Code Does\". You changed a field. Three downstream services broke in production. Nobody knew until production. Today I'm releasing the tools I built to make that impossible."
url: "https://hashnode.com/posts/introducing-moment-and-facet-your-domain-model-deserves-to-run-before-your-code-does/69d1a6d26792e486f6e48a73"
---

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Discussion

# [Introducing Moment and Facet: Your Domain Model Deserves to Run Before Your Code Does](https://blog.coada.dev/introducing-moment-and-facet-your-domain-model-deserves-to-run-before-your-code-does?utm_source=hashnode&utm_medium=feed)

You changed a field. Three downstream services broke in production. Nobody knew until production. Today I'm releasing the tools I built to make that impossible.

Apr 5 · 8 min read · blog.coada.dev  
Read the article

-   [#ddd](https://hashnode.com/tag/ddd)
-   [#domain-driven-design](https://hashnode.com/tag/domain-driven-design)
-   [#event-sourcing](https://hashnode.com/tag/event-sourcing)
-   [#software-architecture](https://hashnode.com/tag/software-architecture)

## Written by

[Mike Dyer](https://hashnode.com/@listenrightmeow)

@listenrightmeow · Los Angeles, USA

  
[View profile](https://hashnode.com/@listenrightmeow)

Built regulated systems, scaled teams, consulted Fortune 500s. Now building alone — and writing about it.

Technical founder with 15+ years across enterprise architecture, FDA-regulated medical devices, clinical trial platforms, and Fortune 500 consulting. Fractional CTO to 9 startups. Scaled teams from single digits to 50+ and products to $100M+ in revenue. Currently deep in domain-driven design and event-sourced systems as a solo practitioner — and writing about what that's revealing about the methodology, the tooling, and the assumptions we've been carrying.

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