Downtime discovered by users = worst-case. Customer emails „site down” before ty wiesz. Monitoring prevents to.
Uptime monitoring
Services like Uptimerobot ping site every 60 seconds. If response code nie 200 — alert. Email/SMS/Slack. Ty wiesz INSTANTLY.
Performance monitoring
Monitor page load time. Jeśli average >2 seconds — alert. Problem caught early.
Error rate monitoring
Count 500 errors. Error rate spike — alert. Something broke.
Alert fatigue
Zbyt dużo alerts = ignored. Configure carefully. Only meaningful thresholds.