Downtime refers to any period when your website or service is unavailable to users. This can result from server issues, network problems, or maintenance.
Types of downtime
Planned downtime
- Scheduled maintenance
- Upgrades and updates
- Infrastructure changes
- Usually communicated in advance
Unplanned downtime
- Server failures
- Software bugs
- DDoS attacks
- Network outages
- SSL certificate expiration
Cost of downtime
Downtime impacts:
- Lost revenue
- Customer frustration
- Brand reputation
- Search engine rankings
- SLA violations
Calculating downtime cost
Downtime cost = Minutes down × Revenue per minute
For a site earning $10,000/hour:
- 1 hour downtime = $10,000 lost
- 0.1% downtime/year ≈ 8.76 hours ≈ $87,600
Reducing downtime
- Use reliable hosting
- Implement redundancy
- Monitor continuously
- Have incident response plans
- Use CDNs for resilience
How VitalSentinel handles this
VitalSentinel is your website's revenue insurance against unplanned downtime. Uptime monitoring runs minute-level checks from multiple regions and alerts you the moment your site stops responding, so you find out in hours, not weeks, when an outage is eating into revenue.
Related Terms
HTTPS
Hypertext Transfer Protocol Secure, an extension of HTTP that uses encryption to secure communication between browser and server.
Server Response Time
The time it takes for a server to respond to a request from a browser, measured from request initiation to receiving the first byte of response.
SSL Certificate
A digital certificate that authenticates a website's identity and enables an encrypted connection between a web server and browser.
Uptime Monitoring
A type of monitoring that continuously checks whether a website or service is available and responding to requests.