Add rate limiting for caching

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

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

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

The title asks for rate limiting for caching, while the body asks for store search and an enable_search option. Start by locating the store implementation and configuration entry point, then clarify which behavior is intended. Done should include the agreed feature, its default behavior, and a test or reproducible check.

Written by the indexing model from the issue text.