Cloudflare Network Issues Hit Brazil and Miami Data Centers

What happened

Cloudflare experienced multiple network performance incidents between April 24-27, affecting critical infrastructure services. The company reported network performance issues in Miami on April 24, resolving them within hours after implementing fixes. Two days later, Brazil experienced similar network problems causing increased disconnects and CNI tunnel degradation, which lasted approximately 25 minutes before resolution. During the same period, Cloudflare's health check monitoring system also failed, affecting alert notifications and analytics capabilities.

Business impact

Enterprise websites using Cloudflare CDN and security services likely experienced degraded performance, failed health checks, and potential service interruptions in affected regions. Teams may have missed critical alerts during the monitoring outage, creating blind spots for incident response. Brazilian operations faced the highest risk given the longer duration and tunnel connectivity issues.

Background

Cloudflare powers CDN and security services for millions of websites globally, making regional outages particularly disruptive for enterprise operations. The simultaneous failure of health check systems during network issues represents a compounded reliability problem, as monitoring tools become most critical during infrastructure incidents. These incidents follow a pattern of regional network issues that have affected major CDN providers throughout 2024.

What this means for your team

Review your CDN failover strategies and ensure you have secondary monitoring beyond Cloudflare's built-in health checks. Implement independent uptime monitoring from providers like Pingdom or StatusCake to maintain visibility during Cloudflare monitoring outages. Document which business-critical applications rely on Cloudflare tunnels and establish manual escalation procedures when automated alerts fail. Test your incident response procedures assuming primary monitoring tools are unavailable.

What to watch

Monitor Cloudflare's engineering blog for post-incident reports explaining root causes and prevention measures. Track whether similar regional performance issues emerge in other geographic areas, suggesting broader infrastructure problems.

Sources

Network Performance Issues in Brazil
Cloudflare Status
Cloudflare Health check issues
Cloudflare Status
Network Performance Issues in Miami
Cloudflare Status