Add rate limiting for backup

**Feature request**
It would be great to have serialization for store.

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

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

No files, tests, or entry points are named. First clarify whether this issue concerns rate limiting for backups or serialization for a store, then identify the relevant configuration and storage or backup entry points. Done should include the agreed behavior and a new `enable_serialization` option whose default is `false`, with tests covering it.

Written by the indexing model from the issue text.