Engine runs on MySQL 8 (or MariaDB 10.6+). Schema changes are shipped as idempotent SQL you run manually — never auto-migrated.
Sizing
| Tier | Orders/month | Recommended |
|---|---|---|
| Starter | < 1k | 1 vCPU / 2 GB RAM / 20 GB SSD |
| Growth | 1k–25k | 2 vCPU / 8 GB RAM / 100 GB SSD |
| Scale | 25k+ | Managed MySQL with read replica |
Always take a backup before applying a schema delta.