Named components

Sometimes you want multiple registrations for the same interface:

• primary vs replica DB

• in-memory cache vs Redis cache

• real service vs stub implementation

Use diwire.Component with typing.Annotated to create distinct keys.

Example

See the runnable script in Components (Named components section).

Notes

• Prefer resolving by the Annotated[...] type in application code.

• diwire.service_key.ServiceKey exists for low-level use, but most projects never need it directly.