Monitoring Platform

LogRocket

Overview

LogRocket is a frontend monitoring and session replay platform that supports bug reproduction and UX issue identification through complete user session recording. With expanding demand due to increasing frontend development complexity, session replay functionality enables detailed analysis of user experience previously difficult to understand.

Details

LogRocket brings innovation to frontend monitoring as a unique platform that can completely reproduce "what users actually experienced."

Key Features

• Session Replay: Complete recording and playback of user sessions
• Performance Monitoring: Frontend application performance tracking
• Error Tracking: Detailed tracking of JavaScript and network errors
• User Analytics: Analysis of user behavior patterns
• Redux Logging: Detailed logging of Redux state changes
• Network Monitoring: Complete recording of API calls and responses
• Heatmaps: Click and scroll heatmaps

Technical Features

• Complete Reproduction: Full recording of DOM operations, network, and console logs
• Real-time: Live session monitoring and alerts
• Privacy Protection: Automatic masking of sensitive data
• High Performance: Minimal impact on browser performance
• Integrations: Support for major frameworks like React, Vue, Angular

Pros and Cons

Pros

• Bug reproduction becomes very easy, dramatically improving development efficiency
• Detailed analysis of user experience possible
• Improved customer support quality
• Deep insights from frontend specialization
• Free tier available
• Rich framework integrations
• Real-time monitoring and alerts

Cons

• Limited backend monitoring capabilities
• Cost escalation with large data volumes
• Privacy concerns (session recording)
• Storage capacity consumption
• Limited enterprise features
• High learning curve

References

• LogRocket Official Site
• LogRocket Documentation
• LogRocket GitHub
• LogRocket Blog

Setup and Monitoring Examples

Basic Setup

// LogRocket basic initialization
import LogRocket from 'logrocket';

LogRocket.init('your-app-id');

// User identification
LogRocket.identify('user123', {
  name: 'John Doe',
  email: '[email protected]',
  subscriptionType: 'premium'
});

// Add session information
LogRocket.getSessionURL((sessionURL) => {
  console.log('Session recorded at:', sessionURL);
});

Metrics Collection

// React application integration
import LogRocket from 'logrocket';
import { setupLogRocketReact } from 'logrocket-react';

LogRocket.init('your-app-id');
setupLogRocketReact(LogRocket);

// Redux integration
import { createStore, applyMiddleware } from 'redux';
import LogRocket from 'logrocket';

const store = createStore(
  rootReducer,
  applyMiddleware(LogRocket.reduxMiddleware())
);

// Custom logging
LogRocket.log('User clicked checkout button');
LogRocket.info('Payment process started');
LogRocket.warn('Network connection slow');
LogRocket.error('Payment failed');

// Performance tracking
LogRocket.track('Page Load Time', {
  page: window.location.pathname,
  loadTime: performance.now()
});

Alerting Configuration

// Error capture configuration
LogRocket.captureException(new Error('Custom error message'));

// Automatic error capture
window.addEventListener('error', (event) => {
  LogRocket.captureException(event.error);
});

// Promise rejection capture
window.addEventListener('unhandledrejection', (event) => {
  LogRocket.captureException(event.reason);
});

// Custom alert conditions
LogRocket.init('your-app-id', {
  shouldCaptureRequest: (request) => {
    // Capture only API errors
    return request.status >= 400;
  },
  
  dom: {
    inputSanitizer: true,  // Auto-mask input fields
    textSanitizer: true,   // Auto-mask text
    blockSelector: '.sensitive-data' // Block specific elements
  }
});

Dashboard Creation

// LogRocket integration with Vue.js
import LogRocket from 'logrocket';
import createPlugin from 'logrocket-vuex';

const app = createApp(App);

LogRocket.init('your-app-id');

// Vuex store plugin
const store = createStore({
  // store options
  plugins: [createPlugin(LogRocket)]
});

// Custom event tracking
app.config.globalProperties.$logRocket = {
  track: (eventName, properties) => {
    LogRocket.track(eventName, properties);
  },
  
  identify: (userId, userData) => {
    LogRocket.identify(userId, userData);
  }
};

// Usage example
this.$logRocket.track('Product Viewed', {
  productId: 'ABC123',
  category: 'Electronics',
  price: 299.99
});

Log Analysis

// LogRocket integration with Angular
import LogRocket from 'logrocket';

@Injectable({
  providedIn: 'root'
})
export class LogRocketService {
  constructor() {
    LogRocket.init('your-app-id');
  }

  identify(userId: string, userData: any) {
    LogRocket.identify(userId, userData);
  }

  track(eventName: string, properties?: any) {
    LogRocket.track(eventName, properties);
  }

  captureException(error: Error) {
    LogRocket.captureException(error);
  }

  // HTTP interceptor
  setupHttpInterceptor() {
    LogRocket.init('your-app-id', {
      network: {
        requestSanitizer: (request) => {
          // Remove sensitive data
          if (request.body && request.body.password) {
            request.body = { ...request.body, password: '[FILTERED]' };
          }
          return request;
        },
        
        responseSanitizer: (response) => {
          // Remove sensitive data from response
          if (response.body && response.body.token) {
            response.body = { ...response.body, token: '[FILTERED]' };
          }
          return response;
        }
      }
    });
  }
}

Integration Setup

// Integration with Sentry
import LogRocket from 'logrocket';
import * as Sentry from '@sentry/browser';

LogRocket.init('your-app-id');

LogRocket.getSessionURL((sessionURL) => {
  Sentry.configureScope((scope) => {
    scope.setContext('LogRocket', {
      sessionURL: sessionURL
    });
  });
});

// Slack notification integration
LogRocket.init('your-app-id', {
  release: process.env.REACT_APP_VERSION,
  
  // Session start handler
  onload: () => {
    LogRocket.getSessionURL((sessionURL) => {
      // Send to Slack webhook
      fetch('YOUR_SLACK_WEBHOOK_URL', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          text: `New session started: ${sessionURL}`
        })
      });
    });
  }
});

// Google Analytics integration
LogRocket.getSessionURL((sessionURL) => {
  gtag('event', 'logrocket_session', {
    'custom_parameter': sessionURL
  });
});

// Add custom metadata
LogRocket.addMetadata('Build Version', process.env.REACT_APP_VERSION);
LogRocket.addMetadata('Feature Flag', 'dark_mode_enabled');
LogRocket.addMetadata('A/B Test', 'variant_b');

Advanced Configuration

// Conditional session recording
LogRocket.init('your-app-id', {
  shouldCaptureRequest: (request) => {
    // Record only in production
    return process.env.NODE_ENV === 'production';
  },
  
  // Performance optimization
  mergeRequests: true,        // Request merging
  parentDomain: '.example.com', // Cross-domain
  
  // Custom sanitizers
  dom: {
    inputSanitizer: (text, element) => {
      // Auto-mask credit card numbers
      return text.replace(/\d{4}\s\d{4}\s\d{4}\s\d{4}/, '**** **** **** ****');
    }
  },
  
  console: {
    isEnabled: {
      log: true,
      info: true,
      warn: true,
      error: true,
      debug: false  // Exclude debug logs
    }
  }
});