Improve error messages in controllers

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

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

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

The issue names no files or tests; start by locating the controller, store, and configuration entry points in the repository. Trace how store operations currently run and determine how the new enable_timeout option should affect them. Done means the option defaults to false, enables the intended timeout behavior, and is covered by appropriate tests.

Written by the indexing model from the issue text.