Gateway Timeout (GATEWAY_TIMEOUT)

The upstream server did not respond within the allowed time.

Common Causes

• Slow upstream — The backend server is taking too long to process the request.
• Network issues — Connectivity problems between Zuplo and the upstream server.
• Large payloads — The request or response body is very large and takes too long to transfer.
• Upstream overload — The backend server is under heavy load and unable to respond in time.

How to Fix

For API Consumers

• Retry the request after a short delay.
• Check if the upstream service is experiencing known issues.
• Reduce the request payload size if possible.

For API Operators

• Verify the upstream server is healthy and responding.
• Check the URL Forward or URL Rewrite handler configuration to ensure the upstream URL is correct.
• Review upstream server logs for errors or slow queries.
• Consider increasing the timeout configuration if the upstream legitimately needs more time to respond.