the client) - the greater the number of hops required to transfer data from your client to the server in question, the further upstream that server is located. Another way to think of upstream versus downstream is their relative proximity to your device (i.e. Thus, a server that is upstream is located higher in the overall server hierarchy than a server that is downstream. In general networking parlance, an upstream server is a server that provides a service to (i.e. Similar to the 502 Bad Gateway Error we’ve looked at in the past, a 504 Gateway Timeout Error indicates that something has gone wrong with a gateway or proxy server that is further upstream. Throughout this article we’ll examine the 504 Gateway Timeout Error by looking at a few troubleshooting tips and potential fixes for common problems that might be causing this issue, so let’s get started! The Problem is Server-SideĪll HTTP response status codes that are in the 5xx category are considered server error responses. There are dozens of possible HTTP status codes used to represent the complex relationship between the client, a web application, a web server, and often multiple third-party web services, so determining the cause of a particular status code can be a challenge, even under the best of circumstances.

As with most HTTP response codes that indicate an error like this, it can be difficult to determine the exact cause of a 504 Gateway Timeout Error. A 504 Gateway Timeout Error is an HTTP response status code indicating that a server, which is currently acting as a gateway or proxy, did not receive a timely response from another server further upstream.

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