Uptime is more than a green indicator opening the homepage every five minutes. Reliable monitoring tests from multiple locations whether DNS, network, TLS, web server and application are functioning correctly. An incident process then turns signals into recovery and improvement.
Availability is a chain
A server can be powered on while DNS fails, a certificate expires, the database hangs or checkout returns errors. Test both technology and user journeys. For a shop, product, basket, payment and transactional mail are separate critical functions.
Monitor from multiple locations
One monitoring point can suffer its own network problem. Use independent locations and confirm an outage before alerting everyone. Combine reachability with response time, status code, content checks and certificate warnings.
Avoid noisy alerts
An alert must lead to action. Configure thresholds, confirmation checks and priorities. A brief spike differs from five minutes of complete outage. Document who responds, what information is required and when to escalate.
Redundancy must be tested
A secondary nameserver, network route or backup helps only when current and reachable. Test failover and recovery in a controlled way. Expose hidden dependencies: two services may have different names but share power, a database or one provider.
Incident response in six steps
- Detect and confirm the alert.
- Determine impact and affected services.
- Contain damage and choose a workaround.
- Repair the root cause.
- Validate website, mail, data and security.
- Record timeline, cause and improvements.
SLA, SLO and realistic expectations
An SLA is an agreement; an SLO is an operating objective. Measurement periods, excluded maintenance and methodology change what a percentage means. Review recovery time, errors and performance as well as uptime. Our guide to Core Web Vitals and hosting covers user experience.
After the incident
A blame-free review asks how detection, communication, technology and procedures can improve. Assign owners and deadlines; otherwise the report becomes paperwork rather than prevention.
Frequently asked questions
Is 100% uptime possible?
No complex service can eliminate every risk. Redundancy, maintenance and rapid recovery reduce impact.
How often should monitoring run?
It depends on risk and function. Critical transactions need more frequent and deeper checks than an informational page.
Is checking the homepage sufficient?
No. It commonly misses database, login, email, API and checkout failures.
Experiencing an outage? Verify it from more than one network and open a ticket through the support portal with the time, URL and error.
