Add configuration options for caching

**Problem**
When working with auth, the error messages could be more descriptive.

**Suggestion**
Improve error handling and add detailed error messages.

**Context**
This would help with debugging and maintenance.

Start by reconciling the title's caching configuration request with the body’s authentication error-message proposal, then locate the relevant authentication and configuration entry points. Before coding, clarify the intended scope and acceptance criteria; done should be defined by the agreed behavior and corresponding verification.

Written by the indexing model from the issue text.