Optimize middleware for large datasets

**Description**
Currently lib lacks proper logging support.

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

**Priority**: Low/Medium

Start in the lib directory and locate the middleware implementation and its current output paths. Determine where configurable logging belongs, what sensible defaults mean for this project, and how logging behavior can be verified; the issue names no specific test or entry-point file.

Written by the indexing model from the issue text.