Cloudflare D1¶

D1 is Cloudflare SQLite storage used from Workers and Pages Functions.

Upstream references¶

• D1 Documentation
• D1 Migrations

What upstream owns¶

• D1 API behavior
• migration command behavior
• binding shape

What VCQA owns¶

• migration discipline.
• local/remote parity checks.
• tenant database isolation.
• query-safety checks.

Detection signals¶

• [[d1_databases]] in Wrangler config
• migrations/*.sql
• D1 binding usage in Functions or Workers

Composed standards¶

• Cloudflare D1 App
• Tenant-Deployed Cloudflare SaaS

Combination-born guidelines¶

• D1 plus GitHub Actions requires a migration apply gate before production deployment.
• D1 plus tenancy requires per-tenant or explicitly partitioned database boundaries.
• D1 plus TypeScript requires parameterized query patterns and typed row mapping.