error-tracking

Error handling in Express requires wrapping async route handlers to catch promise rejections and pass them to error middleware. Review your try-catch patterns, add missing error boundaries around async operations, and implement recovery strategies like asyncHandler wrappers to ensure all exceptions are properly caught and logged rather than crashing the process.

Sentry integration involves initializing the SDK at application startup, configuring captureException() calls in error handlers, and enriching error context with user, request, and environment data. Proper placement in Express middleware, route handlers, and promise rejection handlers ensures comprehensive error visibility and filtering reduces noise from expected errors.

Design monitoring strategy by categorizing errors by severity and source, configuring Sentry dashboards to track patterns, and establishing alerting thresholds. Tailor dashboards to your project's needs by defining which error types require immediate attention, grouping related issues, and routing notifications to appropriate teams.

Yes, Sentry supports both Node.js backends and browser applications. Browser integration captures client-side exceptions, promise rejections, and network errors through the same SDK, enabling unified error monitoring across your full stack with consistent context enrichment and filtering strategies.

Effective patterns include try-catch blocks in async functions, error middleware in Express, asyncHandler wrappers for route handlers, and global rejection handlers for unhandled promise rejections. These patterns ensure errors are caught consistently, logged to Sentry, and handled gracefully without crashing your application.