Website Monitoring and Uptime: What Every Business Should Track
Find problems before customers do. The essential checks for uptime, performance, SSL, errors and security, and how to set up useful alerts.
Many businesses learn that their website or system is down when a customer calls to complain. By then sales are lost and trust is damaged. Monitoring turns surprises into early warnings. You do not need an expensive tool to start; you need the right checks and alerts that reach the right person.
1. Uptime checks
An uptime monitor requests your website or API from outside your network every minute or few minutes and alerts you when it fails.
- Monitor the homepage and important pages such as login, checkout or an API health endpoint.
- Check from several locations to avoid false alarms from one network.
- Confirm the page contains expected text, not only that it returns a response.
2. Response time
A site can be "up" but painfully slow. Track response time for key pages and set alerts when it stays above a threshold for several minutes. Sudden slowdowns often indicate database problems, traffic spikes or failing dependencies.
3. SSL certificate expiry
Expired certificates cause browsers to show security warnings and visitors leave immediately. Monitor certificate expiry dates and get alerts at least two to three weeks in advance, even when renewal is automatic.
4. Domain expiry and DNS
A lapsed domain takes everything offline, including email. Track domain renewal dates and keep contact details at your registrar up to date. Monitor DNS records for unexpected changes.
5. Server resources
For servers you manage, watch:
- CPU and memory usage.
- Disk space (full disks cause many outages).
- Database connections and slow queries.
- Background jobs and queues that stop processing.
Alert on trends, such as disk usage above 80%, before they become failures.
6. Application errors
Track error rates and exceptions from your application. A sudden rise in errors after a deployment is a strong signal to roll back. Centralised error tracking shows which errors affect the most users.
7. Logs
Collect logs from servers and applications in one place with search. When an incident happens, logs show what changed and when. Keep retention periods sensible to control cost.
8. Security signals
Monitor failed login attempts, new admin accounts, unexpected configuration changes and web application firewall blocks. Many attacks show warning signs before they succeed.
9. Backups
Monitor that backups complete successfully and alert when they fail. A backup job that silently stopped weeks ago is a common unpleasant discovery during an incident.
Designing alerts people respond to
- Alert on symptoms customers feel, such as downtime, slow responses and errors, not on every small metric.
- Avoid alert fatigue. Too many alerts teach people to ignore them.
- Send alerts to the right channel: email, SMS, WhatsApp or chat, depending on urgency.
- Define who is on call outside office hours for critical systems.
- Include context: what failed, since when, and a link to the dashboard.
A simple starter setup
| Check | Frequency | Alert when |
|---|---|---|
| Homepage and login uptime | Every 1–5 minutes | 2 failures in a row |
| API health endpoint | Every 1 minute | Unhealthy for 2 minutes |
| Response time | Continuous | Above threshold for 5 minutes |
| SSL certificate | Daily | Less than 21 days left |
| Domain expiry | Weekly | Less than 30 days left |
| Disk space | Every 5 minutes | Above 80% |
| Backup job | After each run | Failed or not run |
A real-world example
An online store learned of a two-hour checkout outage only when a customer complained on social media. The homepage had been working the whole time, so a basic uptime check would not have helped: the payment step was failing because a certificate on an integration had expired. The store added monitors for the checkout page and its payment API, alerts for certificate expiry on every domain and integration, and response-time checks for the product search. Alerts went to a WhatsApp group with two named people on duty after hours. A few weeks later, a monitor caught a slow database query during a sale within minutes, and the team fixed it before most customers noticed. Monitoring the customer journey, not just the homepage, made the difference.
Frequently asked questions
Are free uptime monitors good enough? For a small website, free plans that check every few minutes are a good start. Business-critical systems benefit from paid plans with faster checks, more locations and better alert channels.
What should a status page include? Current status of key services, ongoing incidents with updates, and scheduled maintenance. It reduces support calls during problems and shows customers you are transparent.
How do we learn from incidents? After an incident, write a short review: what happened, how it was detected, how it was fixed and what will prevent it next time. Focus on improving systems, not blaming people.
Key takeaways
- Monitor uptime, response time, SSL, domains, resources, errors, security signals and backups.
- Alert on customer-visible symptoms and avoid alert fatigue.
- Route alerts to people who will act, with clear on-call responsibility.
- Review incidents to prevent repeats.
KHR Digital Solutions monitors the websites and business systems it hosts around the clock, with alerts, backups and incident response.
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