Database migration runbook

Backup, migrate, verify, and a rollback branch for production schema changes.

Preview

Mermaid 11 renderer

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Mermaid source

flowchart

flowchart TD
    backup[Take backup] --> maintenance[Enable maintenance mode]
    maintenance --> migrate[Run migration]
    migrate --> verify{Verification queries pass?}
    verify -->|yes| disable[Disable maintenance mode]
    verify -->|no| restore[Restore from backup]
    restore --> incident[Open incident]
    disable --> monitor[Monitor error rates]

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