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${ noResults }
tiangolo.fastapi/docs/en/docs/advanced/routing-architecture.md
920 B
920 B
Routing Architecture
FastAPI keeps public routing imports stable at fastapi.routing, but the
implementation is split into focused internal modules for maintainability.
Public facade
fastapi.routing- compatibility facade and stable imports
- re-exports core symbols such as
APIRouter,APIRoute, and helper hooks
Internal modules
fastapi.routing_routerAPIRouterimplementation
fastapi.routing_routesAPIRouteandAPIWebSocketRoute
fastapi.routing_handlers- request/websocket handler factories and handler config objects
fastapi.routing_utils- low-level shared utilities (response serialization, lifespan helpers, wrappers)
Stability contract
- Application code should import from
fastapi.routing(or top-levelfastapi). - Internal modules are implementation details and may evolve.
- Compatibility tests validate that key re-exports remain stable.