✓ postgres      db-1.internal:5432  300ms
✓ redis         cache-1.internal:6379  200ms
! api-gateway   gw-1.internal:8443  1400ms
✓ worker        worker-1.internal:9090  500ms
✗ scheduler     cron-1.internal:8080  1800ms
✓ metrics       prom-1.internal:9091  700ms
