> ## Documentation Index > Fetch the complete documentation index at: https://docs.germainux.com/llms.txt > Use this file to discover all available pages before exploring further. # ReactJS Operational Experience Intelligence > Understand how users experience your ReactJS application and correlate their behavior with React components, JavaScript, browser errors, and network calls. Components [`Engine`](https://docs.germainux.com/main/germain-ux-engine) [`JS Profiler`](https://docs.germainux.com/main/germain-ux-js-profiler) [`Mobile App`](https://docs.germainux.com/main/germain-ux-mobile-app) [`RPA Bot Recorder`](https://docs.germainux.com/main/germain-ux-rpa-bot-recorder) [`RUM JS`](https://docs.germainux.com/main/germain-ux-rum-js) Availability 2017.1 or later > [card] [Understanding User Experience](#understanding-user-experience) > > Link users to React behavior > [card] [Error Monitoring](#error-monitoring) > > Errors that affect real users > [card] [Synthetic Monitoring](#synthetic-monitoring) > > Proactive journey checks with bots > [card] [Deployment](#deployment) > > RUM JS, Engine and components ## Overview > [!NOTE] > > GermainUX provides real-time **Operational Experience Intelligence, Real User Monitoring, Session Replay, ReactJS Component Monitoring, JavaScript Profiling, Analytics, Alerting, and Automation for ReactJS applications**. ## Understanding User Experience Understand how users experience your ReactJS application and correlate their behavior with React components, JavaScript execution, browser errors, network requests, APIs, integrations, and supporting infrastructure. ### Visibility Across the Stack * User * Browser * ReactJS * JavaScript * API / Service * Backend * Infrastructure User Browser ReactJS JavaScript API / Service Backend Infrastructure ![Real-time UX, Process and Tech Insights for React Application](https://mintcdn.com/germain-ux/A5V4ExbdsH-e9Odt/images/main/react-js-monitoring/conversion-react.gif?s=dd8d520740589594f250c720584bd7a2) Real-time UX, Process and Tech Insights for React Application - GermainUX ## Real User Monitoring Monitor how actual users interact with ReactJS applications. Capture activity such as: * User sessions * Navigation * User actions * Page and application activity * Browser information * Performance * Errors * Network activity Analyze experience across users, sessions, browsers, application areas, and time periods. ## Session Replay Replay monitored ReactJS user sessions to understand exactly what occurred. Session Replay helps teams investigate: * User navigation * Application behavior * Errors * Unexpected interactions * Performance delays * Friction * Failed workflows Combine replay with technical telemetry to understand both **what the user experienced** and **why it happened**. ## ReactJS Component Monitoring Monitor the usage and performance of ReactJS components. GermainUX helps identify: * Frequently used components * Slow-performing components * Component rendering performance * Components contributing to poor user experience * Potential optimization opportunities Component-level monitoring helps narrow an application-level performance issue to the React component involved. ## JavaScript Performance Monitor JavaScript execution within ReactJS applications. Identify JavaScript contributing to: * Slow interactions * Long execution * Application responsiveness issues * Poor page performance * User-visible delays JavaScript telemetry can be analyzed alongside the affected ReactJS session. ## JavaScript Profiling Use GermainUX JS Profiler for deeper JavaScript troubleshooting. Profiling helps identify: * Expensive JavaScript functions * Execution-time bottlenecks * Frequently executed code * JavaScript call stacks * Code contributing to slow user interactions This provides deeper visibility when standard browser performance monitoring is not sufficient. ## Error Monitoring Monitor and analyze errors affecting ReactJS applications. Examples include: * JavaScript errors * Console errors * Network errors * Failed resources * Integration failures * Application-specific errors GermainUX helps identify errors that affect actual users and provides session context for troubleshooting. ## Network & API Performance Monitor network requests made by the ReactJS application. Analyze: * Request duration * Response time * Latency * HTTP status * Slow requests * Failed requests This helps identify whether a slow ReactJS experience originates in: ReactJS Network API / Service rather than in the browser code itself. ## Integration Monitoring Identify failures or performance degradation in integrations used by the ReactJS application. Examples include: * REST APIs * External services * Authentication services * Third-party integrations * Backend application services Correlate integration performance with affected user sessions and ReactJS activity. ## Cross-Browser Experience Analyze ReactJS behavior across supported browsers and versions. Identify: * Browser-specific errors * Performance differences * Compatibility problems * Different user experiences between browsers This helps ensure consistent application behavior across the supported user population. ## Application Performance Monitor ReactJS application uptime and performance through both actual-user and proactive monitoring. Analyze: * Application availability * User-perceived performance * JavaScript performance * Component performance * Network performance * Integration performance This provides a broader view than individual technical metrics alone. ## Transaction Performance Comparison When analyzing a slow or failed ReactJS application transaction, use Comparison to compare its performance with another execution of the same transaction, such as the fastest, slowest, most recent, first seen, or last seen. Comparison can reveal: * Differences in execution time for the same ReactJS operation * Which React components, JavaScript functions, or API calls caused the slowdown * Performance differences between successful and failed ReactJS transactions * Errors or bottlenecks affecting user workflows * Potential root causes of transaction performance degradation This helps pinpoint why a ReactJS transaction is slower or failing, identify the underlying bottlenecks, and accelerate resolution to improve application performance and user experience. More details on [**Transaction Performance Comparison**](https://docs.germainux.com/main/4-analysis-dashboard.md#comparison-of-bad-vs-good). ## Synthetic Monitoring Use GermainUX RPA Bot Recorder and synthetic monitoring to execute critical ReactJS journeys proactively. Examples include: * Login * Search * Form submission * Checkout * Account management * Critical business workflows Synthetic transactions help detect availability or performance degradation even when no real user is currently executing the workflow. ## Logging & Troubleshooting Analyze application and supporting-system logs where available. Use logs to investigate: * Errors * Warnings * Exceptions * Integration failures * Backend conditions Correlate relevant log events with ReactJS user and application telemetry where supporting monitoring is deployed. ## Infrastructure & Resource Monitoring Where the ReactJS application depends on monitored server or cloud infrastructure, GermainUX can correlate the user experience with supporting resource telemetry. Examples include: * CPU * Memory * Disk * Server health This helps determine whether poor ReactJS performance originates in the browser, API, backend application, or infrastructure. ## Root Cause & User Impact GermainUX correlates ReactJS user experience with underlying technical telemetry. For example: Slow User Action React Component JavaScript Execution or: Slow User Action Network Request API or: User Error JavaScript Error Affected Sessions or: Application Degradation Backend Service Infrastructure This helps teams move from an aggregate symptom to the affected users, sessions, and technical cause. ## Detect Issues GermainUX can help detect conditions such as: * Slow user interactions * Slow React components * JavaScript performance degradation * JavaScript errors * Network failures * Slow APIs > [accordion] Show all 10 > > * Integration failures > * Browser-specific issues > * Application unavailability > * Critical workflow failures Detected conditions can be analyzed, alerted on, reported, or used to trigger approved automation. ## Real-Time Dashboards & Automated Reports Create dashboards and automated reports for ReactJS monitoring. Examples include: * User experience * Session activity * React component performance * JavaScript performance * Errors * Network/API performance > [accordion] Show all 9 > > * Application availability > * Synthetic transactions > * SLA status Combine experience and technical telemetry to understand application health and user impact. ## Alerts & SLA Monitoring Configure SLAs and alerts for conditions requiring attention. For example: * Application unavailable * User interaction exceeds threshold * React component becomes slow * JavaScript execution exceeds threshold * Error rate increases * API response time exceeds threshold * Synthetic transaction fails Thresholds should reflect the expected performance of each application and critical workflow. ## Automation ReactJS monitoring conditions can trigger GermainUX automation. For example: Monitor Detect Analyze Alert Automate Automation can include: * Notifications * Reports * HTTP actions * Scripts * Operational workflows * Remediation actions where appropriate ## End-to-End Operational Experience Intelligence Combine ReactJS monitoring with GermainUX monitoring for backend applications, databases, integrations, and infrastructure. For example: User Browser ReactJS JavaScript API Backend Database This provides visibility from the actual user experience through the technology supporting it. ## Deployment ReactJS user monitoring is deployed using the GermainUX **RUM JS, Engine** and other components. * * [Deploy](https://docs.germainux.com/main/engine-deployment-for-sap.md) Monitoring or automation for ReactJS * [Configure](https://docs.germainux.com/main/configure-monitoring-for-sap.md) Monitoring or automation for ReactJS ## Additional Resources > [card] [AI](https://docs.germainux.com/main/ai-driven-insights.md) > > Insights & Recommendations > [card] [Analytics](https://docs.germainux.com/main/analytics.md) > > More Analytics Features > [card] [Automation](https://docs.germainux.com/main/automation.md) > > More Automation Features > [card] [Dashboards](https://docs.germainux.com/main/dashboard-and-report.md) > > Dashboards and reports overview > [card] [Reports](https://docs.germainux.com/main/reporting-automatic.md) > > Automatic and scheduled reports ## Get Help > [card] [Contact GermainUX Support](https://docs.germainux.com/main/support.md) > > The GermainUX team helps you get up and running faster, empower your team, turn data into actionable insights, and optimize performance to deliver measurable business outcomes. > [card] Can't find what you need? > > Search all GermainUX docs with **Ctrl + K**, or use the feedback buttons at the bottom of this page to tell us what is missing. 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