To address performance degradation, profile your app, identify bottlenecks, and optimize resource-intensive processes.

If your web app's performance is degrading over time, it’s vital to diagnose the underlying causes to restore its efficiency. Begin by profiling your application using performance monitoring tools such as New Relic, Dynatrace, or Google Lighthouse. These tools provide insights into various performance metrics, helping you pinpoint slow components and identify bottlenecks. Look for areas where response times have increased, and pay attention to server response times, database query durations, and resource loading times. Once you've identified the bottlenecks, analyze your code to understand what might be causing the slowdown. For instance, if database queries are taking longer than expected, consider optimizing your queries by adding indexes or refining your query logic. Additionally, review your caching strategies. Ensure that you're effectively caching frequently accessed data, whether in-memory, on the server-side, or through a CDN. If you notice that certain APIs are slowing down, it may be worth implementing throttling to reduce load during peak traffic times. Also, evaluate your app's resource usage; excessive memory consumption or high CPU usage can lead to performance degradation. Implement techniques like code splitting to load only the necessary parts of your application, which reduces initial load times. Regularly review and refactor your code to keep it clean and efficient, as accumulated technical debt can contribute to performance issues. By following these steps, you can effectively manage and improve the long-term performance of your web app.