Add rate limiting for caching

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

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

**Priority**: Low/Medium

The payload names no files, tests, or entry points, and the title conflicts with the body. First clarify whether this concerns caching rate limits or configurable model backups, then locate the relevant caching or model code and its tests. Done should mean the agreed behavior is implemented with configurable settings and sensible defaults.

Written by the indexing model from the issue text.