React Error and Performance Monitoring
Detect, understand, and fix errors and performance bottlenecks with clear, actionable debugging context for your React application—across components, state changes, and API requests.
Run this command to sign up for and install Sentry.
npm install @sentry/reactReact monitoring for developers
Get detailed stack traces and debugging context for every error.
Trace connected issues across components, state updates, and async operations.
See exactly what led up to an issue to debug hydration errors, navigation failures, layout shifts, and rage clicks.
Powered by OpenTelemetry, Trace user interactions, slow component rendering, and API calls in a single trace without having to piece together logs or dashboards for debugging.
Sentry spots the bottlenecks that are impacting real users like:
Rendering delays from inefficient hooks and effects
Unnecessary re-renders that degrade performance
Slow API responses from fetch calls and state updates
Blocking middleware increasing response times
Bloated React bundles
Codecov gives you clear insights into your React app’s coverage and test performance, helping you spot coverage gaps and fix flaky tests.
Identify gaps in component and API test coverage
Spot flaky tests causing CI/CD failures
Ensure critical functionality like state updates and routing is well-tested
By correlating Sentry issues to our dev cycle, we can spot where problems begin and how to fix the source.
Common React Issues Solved
Hydration Errors
Whether it's a flickering UI or missing elements, Sentry's hydration error diff tools make it easy to instantly detect and debug mismatches between server-rendered and client-rendered HTML.
Component Performance Issues
Monitor React component render times and identify slow updates that impact user experience.
State Management Debugging
Track Redux actions and state transitions to understand what changed before an issue occurred.
Prevent Silent Failures in Scheduled Tasks
Missed background syncs or failed API updates can go unnoticed, leading to broken functionality. Ensure your scheduled tasks are running on time and without errors with Sentry’s monitoring tools
Detect Downtime
Get real-time alerts when your application is unavailable, so you can respond quickly before it impacts your users.
FAQs
When debugging, logs, traces, and errors work better together. Logs provide the granular context—like retries, API failures, and internal state—that spans and errors can miss. But in most tools today, logs live in a separate system, forcing you to switch between tools to piece together the full picture.
With logs in Sentry, everything is in one place. You can see logs right alongside your errors and traces—no more context switching, just faster debugging.
Yes. Send logs and traces without code changes to Sentry from platforms where you can't use the Sentry SDKs. Set up log drains to forward logs from your deployments directly to Sentry without code changes. Log drains are available for Vercel, Cloudflare, Heroku, Supabase, and Shopify Hydrogen.
You can get started for free. Pricing depends on the number of monthly events, transactions, and attachments that you send Sentry. For more details, visit our pricing page.
Sentry doesn’t impact a web site’s performance.
If you look at the configuration options for when you initialize Sentry in your code, you’ll see there’s nothing regarding minimizing its impact on your app’s performance. This is because our team of SDK engineers already developed Sentry with this in mind.
Sentry is a listener/handler for errors that asynchronously sends out the error/event to Sentry.io. This is non-blocking. The error/event only goes out if this is an error.
Global handlers have almost no impact as well, as they are native APIs provided by the browsers.
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