Cloudflare Error 1200: Cache connection limit

Too many requests are queued at Cloudflare for the origin — the origin is slow and connections pile up.

Seen on: Cloudflare

Meaning

When the origin responds slowly under load, requests waiting on it exceed Cloudflare’s queue limit for the site.

Common causes

  • Slow or overloaded origin
  • Traffic spike on uncached content
  • Long-running requests holding connections

⚡ Quick fix

  1. Improve origin performance/capacity
  2. Cache more content at the edge
  3. Enable Argo/Tiered Cache to reduce origin load

Detailed fix by platform

Cloudflare

  1. # Caching → Cache Rules: cache static and anonymous HTML where possible

How to diagnose

  1. Origin — Response times under load
  2. Cache — Hit ratio

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