Clerk Auth Monitoring: Middleware Latency, Webhooks, and Uptime

# clerk# authentication# monitoring# nextjs
Clerk Auth Monitoring: Middleware Latency, Webhooks, and UptimeVigilmon

Monitoring Clerk Auth Integration Clerk handles auth infrastructure, but your integration...

Monitoring Clerk Auth Integration

Clerk handles auth infrastructure, but your integration needs observability.

Track Middleware Latency 

export default clerkMiddleware(async (auth, req) => {
  const start = Date.now();
  const { userId } = await auth();
  const duration = Date.now() - start;
  if (duration > 100) {
    console.warn('clerk_auth_slow: ' + duration + 'ms on ' + req.nextUrl.pathname);
  }
});
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Webhook Delivery 

export async function POST(req: Request) {
  try {
    const evt = wh.verify(await req.text(), getHeaders(req));
    await syncUser(evt);
    return new Response('OK', { status: 200 });
  } catch (err) {
    console.error('webhook_failed');
    return new Response('Error', { status: 400 });
  }
}
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Health Check 

export async function GET() {
  return Response.json({ status: 'ok', clerk: !!process.env.NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY });
}
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Alert Priorities

  • Auth check latency above 200ms
  • Webhook failure rate above 1%
  • Clerk status page incidents