Gateway Timeout 504

Reference guide

Request path

  1. You (reached)
  2. DNS (reached)
  3. Cloudflare edge (reached)
  4. Origin (answered with a warning)

504

Likely cause

The origin's own upstream — not Cloudflare — timed out responding.

What to do

  1. Check. Check the origin's own proxy/load balancer logs for which upstream call timed out, and check that dependency's own performance (e.g. a slow database query or internal API call).
  2. Fix. Optimize or fix the slow upstream dependency, or increase the origin's own upstream timeout if the slow response is expected and acceptable.
  3. Verify. Retry the request and confirm it completes within a normal time.

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