Title: Backend Description: The backend uses Echo for HTTP handling, Huma for OpenAPI generation, and Bun ORM for database access. Canonical: https://docs.openpo.st/development/backend Source: [https://docs.openpo.st/development/backend](https://docs.openpo.st/development/backend) # Backend The backend uses Echo for HTTP handling, Huma for OpenAPI generation, and Bun ORM for database access. SQLite is the self-hosted default; Postgres is the cloud deployment path. This page is for contributors changing server code, storage behavior, or HTTP boundaries. ## Layering - Handlers - Services - Database/models ## Expectations - Platform logic must stay inside `internal/platform/` - Prefer Bun ORM over raw SQL for normal queries - Use dependency injection patterns from `main.go`