Improve App Performance
Optimizing your Vega app's performance is crucial for delivering a smooth, responsive experience to users. This section covers key performance areas and provides tools and techniques to measure, analyze, and improve your app's performance.
Key performance topics
Measure Your App KPIs
Learn how to use the Vega App KPI Visualizer to measure critical performance metrics like:
- Time to First Frame (TTFF)
- Time to Fully Drawn (TTFD)
- Foreground and Background Memory Usage
- UI and Video Fluidity
Monitor CPU Usage
Use the Activity Monitor to track real-time CPU metrics and record performance data for detailed analysis.
Monitor and Record Memory
Leverage the Memory Monitor to inspect your app's memory usage, capture snapshots, and analyze memory breakdowns.
Identify UI Rendering Issues
Learn techniques to identify and resolve UI rendering jank, improving your app's fluidity and responsiveness.
Investigate JavaScript Thread Performance
Use thread state visualization to troubleshoot performance issues in your JavaScript apps.
Investigate JavaScript Memory
Learn how to identify, analyze, and resolve memory issues that can lead to crashes and poor performance.
Investigate Component Re-rendering Issues
Use tools like why-did-you-render to identify and fix unnecessary re-renders in your React components.
Detect Overdraw
Learn how to use Vega Studio's overdraw detection feature to optimize your app's rendering efficiency.
App Performance Best Practices
A guide to performance optimization techniques for Vega apps, covering topics like:
- Focus management
- Efficient rendering
- Memory management
- Animation performance
- Image optimization
App Performance FAQ
Get answers to common performance-related questions and learn how to address issues like:
- Slow app launch
- Sluggish scrolling
- Key press latency
- Memory leaks
Discover Performance Issues Using Vega ESLint Plugin
The eslint-plugin-kepler provides automated linting rules for Vega apps, helping you discover and fix performance issues.
Use Chrome DevTools for App Profiling
React Native for Vega supports Chrome DevTools (CDT) for debugging Fire TV apps. The Chrome browser includes CDT, which lets developers inspect, debug, and profile apps.
Monitor Network Traffic with Charles Proxy
Charles Proxy helps debug network traffic in Vega apps and inspect HTTPS connections that handle sensitive information.
Monitor Traffic with Network Proxy
The Vega Studio’s Network Proxy Tool monitors and troubleshoots network activity in Vega apps.
Last updated: Sep 30, 2025
