HTTP Code: 504 (Gateway Timeout)
HTTP Status Code Reference
Status Category
5xx — Server Error
Meaning & Definition
The server, while acting as a gateway or proxy, did not receive a timely response from the upstream server it accessed in attempting to fulfill the request.
Common Causes
- Extremely slow database query executions
- Slow network links between proxy gateways
- Exhausted upstream application execution timeouts
How to resolve HTTP code errors
1. Inspect Logs: Check server logs (e.g. error.log) to locate runtime exceptions or database disconnects.
2. Test Endpoint: Use our Uptime Checker or redirects prober to verify response headers and payload size.
3. Configure Rules: Implement custom redirect rules or error fallback paths below in Nginx/Apache config.