Update components documentation

**Feature request**
It would be great to have backup for parsers.

**Use case**
Many users need this functionality for production deployments.

**Implementation idea**
Add a new config option `enable_backup` with default `false`.

Start by locating the components documentation and the parser configuration entry point. Clarify how parser backup should work in production before adding the `enable_backup` option, and confirm that its default is `false`; the issue does not name files or tests to run.

Written by the indexing model from the issue text.