Core Products

Agent Setup (Node.js)

// Install
npm install newrelic

// newrelic.js config
exports.config = {
  app_name: ['My Application'],
  license_key: 'your_license_key',
  logging: {
    level: 'info'
  }
};

// Add to app entry point
require('newrelic');
const express = require('express');
const app = express();

Custom Instrumentation

const newrelic = require('newrelic');

// Custom transaction
newrelic.startWebTransaction('myTransaction', function() {
  // Your code
});

// Custom attribute
newrelic.addCustomAttribute('userId', '12345');

// Record metric
newrelic.recordMetric('Custom/MyMetric', 42);

// Notice error
newrelic.noticeError(new Error('Something went wrong'));

Best Practices

• Add custom attributes for context
• Use transaction tracing for slow requests
• Set up alerts for Apdex score
• Monitor key transactions separately