Infrastructure Issues
Infrastructure issues affect your website's foundational performance, availability, and reliability. These issues often have the most significant impact on user experience and can affect all other metrics.
Issue Guides
DNS & Domain
- DNS Configuration - DNS record configuration and propagation issues
- SSL Certificate Issues - Certificate expiry, misconfiguration, and chain issues
- Domain Expiry - Domain registration expiration monitoring
Hosting & Server
- Server Response Time - Slow server response and TTFB issues
- Server Errors - 5xx errors and server availability
- Resource Limits - CPU, memory, and bandwidth constraints
CDN & Caching
- CDN Configuration - CDN setup and caching policy issues
- Edge Caching - Edge server caching effectiveness
- Cache Invalidation - Stale content and cache clearing issues
Uptime & Monitoring
- Downtime Detection - Website availability monitoring
- Geographic Availability - Regional access and latency issues
Why Infrastructure Matters
Infrastructure issues cascade through all other performance metrics:
- Server Response directly affects Time to First Byte (TTFB)
- CDN Configuration impacts global user experience
- SSL Issues can completely block site access
- DNS Problems can make your site unreachable
Quick Diagnosis
Check Server Status
- Verify server is responding (HTTP 200)
- Check for 5xx server errors
- Monitor response times
Verify SSL/TLS
- Certificate validity and expiry
- Certificate chain completeness
- Mixed content warnings
Test DNS
- DNS propagation status
- Record configuration
- Name server availability
Related Categories
- Performance Issues - Core Web Vitals and loading speed
- Security Issues - Security headers and HTTPS