Process Monitoring Middleware

The processMonitoring middleware provides real-time monitoring of the server's CPU and memory usage, as well as request processing time.

Parameters

• req: The request object.
• res: The response object.
• next: The next middleware function in the request-response cycle.

Description

The processMonitoring middleware logs the following information:

• Process start time, including request method and URL.
• Total number of requests processed.
• CPU usage (user and system times).
• Memory usage (total and free memory).
• Process finish time, including request method and URL.
• Elapsed time for request processing.

Example Usage

const express = require('express');
const { processMonitoring } = require('apiutils.js');
 
const app = express();
 
// Middleware to monitor process
app.use(processMonitoring);
 
// Your routes and application logic here...
 
app.listen(3000, () => {
  console.log('Server running on port 3000');
});

Notes

• The middleware uses Node.js built-in modules os and perf_hooks to gather system and performance metrics.
• The monitoring interval is set to every 5 seconds (5000 milliseconds) by default, but this can be adjusted as needed.
• Ensure to place the processMonitoring middleware before your route handlers to monitor each incoming request.