The Complete Monitoring Checklist for SaaS Founders

Monitoring is one of those things that feels optional until it isn't. Your product goes down at midnight on a Tuesday, you find out at 9am from a support ticket, and you spend the next two days rebuilding trust with customers who churned overnight because they thought you'd disappeared.

Most founders avoid this with a single uptime check on their homepage. That's better than nothing. But it's a long way from "I know my product is working."

This is the full checklist. Work through it from top to bottom.

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1. URL monitoring — the basics

Start with your critical URLs. For a typical SaaS this means:

• Your marketing homepage (https://yourproduct.com)
• Your login page (https://app.yourproduct.com/login)
• Your API health endpoint (https://api.yourproduct.com/health)
• Your most-used user-facing routes

Check interval matters. A 5-minute check means you can be down for 4 minutes and 59 seconds before you find out. For most SaaS products, 1-minute checks are worth the upgrade. Set the check interval to match how much downtime costs you per minute.

Also: monitor from multiple regions. Single-region monitoring generates false positives — your monitoring provider has a hiccup, you get a 3am page, you check the site and everything's fine. Multi-region checks require multiple locations to confirm a failure before alerting.

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2. SSL certificate monitoring

SSL certificates expire. Every year, on a date that was set when the certificate was issued, it stops working. Your users see a scary browser warning. Some of them leave and don't come back.

This is entirely preventable. You need automated monitoring that checks your certificate expiry and alerts you at least 14 days before it expires — enough time to renew without rushing.

Most modern uptime monitors do this automatically for HTTPS URLs. If yours doesn't, add it. SSL certificate failures are embarrassing, trust-destroying, and trivially avoidable.

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3. Response time monitoring

Your site can be "up" and broken at the same time. A page that takes 12 seconds to load is down, functionally. Users don't wait. They bounce.

Set response time thresholds on your critical monitors. A good starting point: alert if any page takes longer than 3 seconds to respond. For your API: alert over 1 second. Adjust based on your product's baseline.

Also watch for trends, not just thresholds. A page that usually loads in 200ms and starts loading in 800ms is a warning sign, even if it hasn't crossed your alert threshold. Response time graphs let you spot this before it becomes a problem.

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4. Keyword / content monitoring

HTTP 200 doesn't mean your page is working. A broken deployment that returns an error page with status 200 is indistinguishable from a healthy response if you're only checking the status code.

Add keyword checks: configure your critical monitors to verify that a specific string appears in the response body. For your homepage, check that something on the page actually renders. For your API, check that the response contains "status":"ok" or whatever your health check returns.

You can also alert on negative keywords — configure a check to fire if "Application Error" or "500 Internal Server Error" appears in the response, even if the status code is 200.

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5. Heartbeat monitoring for background jobs

Cron jobs, background workers, database backups, email queue processors — these never have a URL you can check. They either run successfully or they silently stop running.

Heartbeat monitoring inverts the model: instead of checking if something is up, you check if it has recently reported in. Each job pings a unique URL at the end of a successful run. If PingBase doesn't hear from it within the expected interval, you get an alert.

Things to add heartbeats to immediately:

• Database backups (if these fail silently, you find out at the worst possible moment)
• Invoice generation or billing jobs
• Email queue workers
• Any data sync or ETL pipeline
• Renewal reminder emails

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6. Alert routing

An alert that goes to a single email address is better than nothing. But email has problems: it gets filtered, it doesn't wake you up, and if you're a team it's not clear who's responsible.

For a SaaS you're taking seriously, set up at least two alert channels:

• Email — your own address, for the paper trail and for incidents you can handle async
• Slack or Discord — your team channel, so the right person sees it immediately

Some teams add a webhook to their on-call tool (PagerDuty, OpsGenie) for their most critical monitors. That's appropriate once you have paying customers who depend on uptime. For an early-stage SaaS, Slack is usually enough.

The key: test your alert routing. Send a test ping. Make sure it arrives where you expect. Alerts that fire but get lost in spam are worse than no alerts — they create false confidence.

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7. Public status page

This is the most underrated item on the list. You need a public status page — not just for your users, but for yourself.

For users: when something goes wrong, they need somewhere to go to find out if you know about it. Without a status page, they file a support ticket, post on Twitter, or churn. With a status page, they check it, see you're aware, and wait.

For you: a status page forces you to have good monitoring. You can't have a credible status page without automated checks driving it. The accountability creates the discipline.

The minimum viable status page:

• Lives at status.yourproduct.com (not a third-party subdomain)
• Shows current status for each major component
• Shows 90-day uptime history bars
• Has incident management — you can post updates during an outage
• Updates automatically from your monitoring — not manually

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The full checklist at a glance

PingBase covers everything on this list. Start free — 5 monitors, no credit card, status page included.