🚀 WhaTap Node.js Agent

> Comprehensive Node.js Application Performance Monitoring (APM) Solution

WhaTap Node.js Agent provides real-time monitoring, tracing, and performance analysis capabilities as a professional APM agent.

📋 Supported Environment

- Platform: macOS (64bit), Linux (64bit)
- Node.js Version: 17.0.0 or higher
- Database: MySQL, PostgreSQL, MSSQL, Oracle, MariaDB, MongoDB, Redis
- Framework: Express, Fastify, Socket.IO, WebSocket, GraphQL

You can install WhaTap using npm with the following command:

``bash
$ npm install whatap
`

📝 Configuration

Copy the whatap.conf file from node_modules/whatap to your project root directory and configure it as follows:

`ini


Essential Settings

license=XXXXXXXXXXXXXX-XXXXXXXXXXXXXX-XXXXXXXXXXXXXX
whatap.server.host=XXX.XXX.XXX.XXX

Application Identification Settings

app_name=MyNodeApp # Application name
app_process_name=node # Process name
`

🚀 Usage

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To activate WhaTap monitoring in your Node.js application, add the WhaTap agent initialization code to your application's top-level entry point file.

> ⚠️ Important: The WhaTap agent must be loaded before all other modules.

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`javascript
// app.js (or server.js)
var WhatapAgent = require('whatap').NodeAgent;

// Import other modules after
const express = require('express');
const app = express();

// Application logic...
`

Run with:
`bash
node app.js
`

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If you prefer not to modify your application code, you can use the -r flag:

`bash
node -r whatap app.js
`

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`javascript
// app.js (or server.js)
import WhatapAgent from 'whatap';
WhatapAgent.NodeAgent;

// Import other modules after
import express from 'express';
const app = express();

// Application logic...
`

✅ Run Application

Once the agent configuration is complete, restart your application to begin monitoring:

`bash


Direct Node.js execution

node app.js

Using npm scripts

npm start
``

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Once your application is running, you can view the following information in the WhaTap console:

- 🔍 Real-time Transactions: HTTP requests, database query tracking
- 📊 Performance Metrics: CPU, memory, GC information
- 🚨 Error Monitoring: Application error and exception tracking
- 📈 Statistical Analysis: Response time and throughput statistics