Support filtering configuration

**Description**
Currently middleware lacks proper monitoring support.

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

**Priority**: Low/Medium

Start by locating the middleware implementation and any existing monitoring or configuration entry points. Clarify which monitoring behavior must be configurable and establish sensible defaults; done means the middleware supports that configuration and its default behavior is documented or verified.

Written by the indexing model from the issue text.