Support caching configuration

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

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

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

The issue does not name any files, tests, or entry points. First clarify whether the intended work is caching configuration, more descriptive middleware errors, or both, then locate the relevant middleware and configuration entry points; done should be defined by the agreed behavior and validation for the resulting error messages.

Written by the indexing model from the issue text.