Error tracking service integrated; uncaught exceptions sent to dashboard; critical errors trigger team alerts

Uncaught exceptions that silently swallow stack traces (CWE-209, CWE-215) make production failures invisible until users complain. Without error tracking (Sentry, Datadog, Rollbar), you cannot quantify your application's error rate, identify the most impactful failures, or detect regressions introduced by a deployment. NIST SI-4 requires active system monitoring; ISO 25010 reliability.fault-tolerance requires that faults be detected and surfaced. A single untracked 500 error affecting 10% of checkout requests can silently drain revenue for days.

Integrate Sentry into your Next.js application using the official SDK.

npm install @sentry/nextjs

Create sentry.client.config.js and sentry.server.config.js:

// sentry.client.config.js
import * as Sentry from '@sentry/nextjs';
Sentry.init({
  dsn: process.env.SENTRY_DSN,
  environment: process.env.NODE_ENV,
  tracesSampleRate: 0.1,  // adjust for traffic volume
});

Wire it into next.config.js via withSentryConfig. In the Sentry dashboard, configure an alert rule: trigger when error rate exceeds 5% over 5 minutes, notify #incidents in Slack and page the on-call engineer via PagerDuty for P1-class errors.