Update controllers documentation

**Description**
Currently routes lacks proper backup support.

**Proposed solution**
Add configurable backup with sensible defaults.

**Priority**: Low/Medium

Start by locating the controllers and route configuration described in the issue, then inspect any existing configuration defaults and backup-related handling. Confirm the expected backup behavior and supported settings with the maintainers; done means routes have configurable backup support with sensible defaults and the relevant checks pass.

Written by the indexing model from the issue text.