Pulse Tracker is a Node.js performance monitoring module. It logs key metrics such as URL, request method, status code, response time, and memory usage for every HTTP request that your application processes.

Install the module using npm:

npm install pulse-tracker

First, require the module in your application:

const pulseTracker = require('pulse-tracker');

Then, use it as middleware in your Express.js application:

app.use(pulseTracker());

This will start logging performance metrics for every request that your application processes.

By default, the logs are output to the console. If you want to log to a file instead, pass an options object with useFileLogging: true when you call pulseTracker():

app.use(pulseTracker({ useFileLogging: true }));

This will start logging the metrics to a file named 'pulse-tracker.log' in your application's directory.

Here's how a user would use it:

const express = require('express');
const pulseTracker = require('pulse-tracker');
const app = express();

app.use(pulseTracker({ useFileLogging: true }));

// rest of the app...

Here's an example of what each log entry looks like:

{
  "DATETIME": "28-May-2023 00:13:20",
  "URL": "http://localhost:5000/api/posts/",
  "Method": "GET",
  "Status": 401,
  "Time used(ms)": "23.02",
  "Memory used(MB)": "23.59",
  "Total memory(MB)": "56.68"
}

Here's what each field means:

• DATETIME: The date and time when the request was processed.
• URL: The full URL of the request.
• Method: The HTTP method of the request.
• Status: The HTTP status code of the response.
• Time used(ms): The time taken to process the request, in milliseconds.
• Memory used(MB): The amount of memory used to process the request, in megabytes.
• Total memory(MB): The total memory available, in megabytes.

We welcome contributions to Pulse Tracker! Please open an issue or submit a pull request on the GitHub repository.