How to Monitor a Website: A Practical Guide
If you run a website, you should know within seconds when it stops working. This guide walks through setting up website monitoring properly — without drowning in false alarms.
Step 1: List what actually matters
Don't monitor everything at once. Write down the pages where downtime hurts most: homepage, checkout, login, sign-up, and critical APIs. Those come first.
Step 2: Choose the right check type
- HTTP check — confirms a page loads and returns the right status code.
- Keyword check — verifies specific text is present, catching pages that return 200 but render an error.
- Port check — for non-web services like databases or mail servers.
Step 3: Set a sensible interval
- Revenue-critical pages: every 30–60 seconds.
- Marketing pages: every 1–5 minutes.
- Internal tools: every 5–15 minutes.
Step 4: Tune for reliability, not noise
The fastest way to start ignoring alerts is to get too many. Use a confirmation threshold so an incident only opens after two or three consecutive failures — filtering out momentary blips while still catching real outages within a minute.
Step 5: Connect alerts you'll actually see
Email is fine to start, but route critical alerts where your team already looks — Slack, a webhook, or push. Send a test alert to confirm delivery.
Step 6: Watch response time, not just up/down
A site can be "up" but painfully slow. Track response time and flag a degraded state so you catch slowdowns before they become outages.