hono-d1-integration

Integrate Cloudflare D1 by binding it to your Hono app via c.env.DB, defining a typed Env interface, and wiring the binding in wrangler.toml. This establishes type-safe database access across your Workers or Pages project.

Use Wrangler-based migrations to manage D1 schema changes. Store SQL migration files in version control under a db/ directory, applying them sequentially to ensure append-only, reversible changes across local, development, and production environments.

Yes. Parameterized queries are enforced through D1's query helpers and a centralized data-access layer. Structure queries in service or repository classes to prevent SQL injection and ensure type safety across your application.

Implement a service or repository layer under a services/ directory that encapsulates all D1 queries. This centralizes database logic, enforces parameterized queries, and separates data-access concerns from route handlers.

Yes. D1 supports local, development, and testing environments through Wrangler configuration. Use separate bindings and migration strategies per environment to test your schema and queries before deploying to production.

Follow a conventional layout with db/ for migrations and schemas, services/ for data-access logic, and typed environment bindings via a shared Env interface. This organization keeps database concerns isolated and maintainable as your app scales.