Files
archify-vscode-ext/examples/c4-e-shop/decisions/0001-postgres-as-source-of-truth.archify-decision
T
root-at-skic b169034b4f Architecture decisions: *.archify-decision files, decisions: keys in diagrams
- parse, merge and validate decisions (ids, status, elements, diagrams,
  supersedes); strip decisions keys from diagrams and check the ids
- model:validate counts decisions; model:list lists them with status and
  the diagrams that reference them; examples carry decisions
- formats.md and SKILL.md describe the format and when an agent writes one
2026-10-19 23:13:00 +03:00

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schema_version: 1
decision:
id: postgres-as-source-of-truth
title: PostgreSQL as the single source of truth
status: accepted
date: 2026-09-02
elements: [db, api, worker]
diagrams: [0200-containers/online-shop.archify]
context: >
Orders, customers and the catalogue were spread over the
shop database and two spreadsheets kept by support.
Refunds were reconciled by hand every Monday.
decision: >
One PostgreSQL database owns orders, customers and the
catalogue. The API is the only writer. Everything else
(cache, search, reports) is derived and may be rebuilt.
consequences: >
Support loses the spreadsheets and gets the admin console.
Any new store must be declared derived or get its own
decision. Backups and migrations are the API team's job.