dependency-injection
Dependency Injection
Use this skill when handlers need shared services, repositories, config, or request-scoped resources.
Workflow
- Define provider functions and wrap them with
Provide. - Register dependencies at app/router/controller/handler scope.
- Prefer narrow scope for overrides and testability.
- Keep service lifecycle explicit (singleton vs request-scoped behavior).
Core Pattern
from litestar import Litestar, get
from litestar.di import Provide
def provide_settings() -> dict[str, str]:
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