{
  "id": 9046304,
  "title": "Testing Risky Postgres Migrations Safely with Volume Cloning on Unikraft Cloud",
  "url": "https://urgent.news/2026/09/22/testing-risky-postgres-migrations-safely-with-volume-cloning-on",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-09-22T00:49:00.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/desmondsanctity/testing-risky-postgres-migrations-safely-with-volume-cloning-on-unikraft-cloud-398j"
  },
  "original_language": "en",
  "account": "Testing risky PostgreSQL migrations safely with volume cloning on Unikraft Cloud involves several key steps. First, the guide creates a multi-tenant API backed by PostgreSQL on Unikraft Cloud. Next, it clones the live database's persistent volume and runs the exact failure against a real copy. Only after the fix has actually succeeded in a disposable environment is the migration promoted. This process avoids the risk of failing production databases due to migrations that work in development but fail in live environments. The guide emphasizes the importance of testing migrations against real data before deploying them to production.",
  "summary": "Database migrations can pass every check in development and still take production down, and the classic example is adding a NOT NULL column with no default to a table that already has rows. It works fine against an empty dev database and fails instantly against real data, which is the one place you cannot afford to find that out. This guide builds a real multi-tenant API backed by PostgreSQL on…",
  "key_points": [
    "Multi-tenant API backed by PostgreSQL on Unikraft Cloud created",
    "Live database's persistent volume cloned for migration testing",
    "Fix tested in disposable environment before promoting migration"
  ],
  "editors_take": "This approach shifts the risk of faulty PostgreSQL migrations from live environments to disposable test ones, ensuring that only thoroughly vetted changes reach production databases.",
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}