Dynamic Performance Monitoring Middleware for Express Apps

Design a performance monitoring middleware for Express.js that automatically tracks and logs execution times for each route, with configurable thresholds for slow requests. The middleware should generate detailed metrics including request path, HTTP method, timestamp, execution duration, and memory usage. Implement a mechanism to trigger alerts or logging when a route consistently exceeds predefined performance thresholds. Include support for both synchronous and asynchronous route handlers, with minimal overhead to the existing application architecture.