Error Tracking Sentry (Node.js / Express) Sentry (React) Sentry (Python) Sentry (Spring Boot) Source Maps Upload (CI/CD) Breadcrumbs Anti-Patterns | Anti-Pattern | Fix | |--------------|-----| | 100% trace sample rate in production | Use 0.1-0.2 for production | | No source maps uploaded | Upload in CI/CD for readable stack traces | | No release tracking | Set to git SHA or version | | Capturing expected errors | Only capture unexpected errors | | No user context | Set user ID/email for debugging | | PII in error data | Scrub sensitive fields in | Production Checklist - [ ] DSN configured per…