Rollbar Troubleshooting: Fixing Missing Stack Traces, Source Maps, and Performance Issues

Details: Category: DevOps Tools; By Mindful Chase; 03.Mar; Hits: 49

Rollbar is a real-time error monitoring and debugging tool that helps developers track and fix application errors efficiently. While it provides powerful insights into production issues, users often encounter challenges such as missing stack traces, delayed error reporting, incorrect source maps, and performance overhead. Addressing these issues is crucial for maintaining robust monitoring and debugging workflows.

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Understanding Common Rollbar Issues

Developers integrating Rollbar into their applications frequently face the following challenges:

Missing or incomplete stack traces.
Delayed or missing error reports.
Incorrect source map resolution.
High memory or CPU usage in production.

Root Causes and Diagnosis

Missing or Incomplete Stack Traces

Stack traces may be missing due to minified JavaScript, obfuscated source code, or incorrect error handling. Check if Rollbar is capturing unhandled exceptions by enabling verbose logging:

Rollbar.configure({
  verbose: true
});

Delayed or Missing Error Reports

If errors are not appearing in Rollbar, check the SDK configuration and network connectivity:

Rollbar.error("Test error", function(err, response) {
  console.log("Rollbar response:", response);
});

Verify API token configuration:

export ROLLBAR_ACCESS_TOKEN=your_access_token

Incorrect Source Map Resolution

Source maps allow Rollbar to display readable stack traces. If they do not resolve correctly:

Ensure the source maps are uploaded after each deployment.
Check that the version number in Rollbar matches the deployed release.
Manually upload source maps using:

curl https://api.rollbar.com/api/1/sourcemap \
  -F access_token=your_access_token \
  -F version=your_app_version \
  -F minified_url=https://yourapp.com/static/app.min.js \
  -F source_map=@/path/to/app.min.js.map

High Memory or CPU Usage

Rollbar can introduce overhead if improperly configured. Reduce performance impact by:

Batching error reports:

Rollbar.configure({
  maxItems: 100,
  itemsPerMinute: 10
});

Using async reporting to avoid blocking execution:

Rollbar.error("Async test", function() {
  console.log("Error sent asynchronously");
});

Conclusion

Rollbar is a powerful tool for error monitoring, but proper configuration is essential for accurate stack traces, efficient error reporting, and minimal performance impact. By ensuring correct source map handling, batching requests, and monitoring resource usage, developers can optimize their Rollbar integration for reliable error tracking.

FAQs

1. Why are my errors not appearing in Rollbar?

Check the API token configuration, verify network connectivity, and ensure your application is sending errors correctly.

2. How do I resolve missing stack traces?

Ensure that source maps are properly uploaded and that Rollbar is capturing unhandled exceptions with verbose: true.

3. How can I reduce Rollbar's performance impact?

Use batching, asynchronous error reporting, and limit the number of error events per minute.

4. Why is my source map not working in Rollbar?

Verify that source maps are uploaded after deployment and that the version matches the reported errors.

5. How do I debug Rollbar integration issues?

Enable verbose logging and inspect the API response when sending test errors to diagnose configuration problems.

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