

The message that's sent with the 503 error can vary depending on server it's coming from, but here are some of the common ones you'll see: - 503 Service Unavailable There are many reasons why a server might return a 503 error, but some common reasons are maintenance, a bug in the server's code, or a sudden spike in traffic that causes the server to become overwhelmed.
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What does the 503 error code mean?Īs mentioned above, 5xx status codes mean there's a problem with the server itself.Ī 503 Service Unavailable error means that the page or resource is unavailable. Now that you have a basic understanding of HTTP status codes, let's dig a bit deeper into the 503 Service Unavailable error. It's only when you get to the 4xx-5xx range that you might notice a status code because you'll see a page like this: A typical 503 error page – Source: Stack Overflow Most status codes go by totally unnoticed, which is fine because it means everything is working. For example, 301 means that a page or resource has moved permanently, while 302 means the move is temporary.Ĭheck out this page for a list of common HTTP status codes and their meaning: The last two digits of each HTTP status code represent a more specific status for each class. 5xx: Server error – there is an error with the server.4xx: Client error – there is an error in the request from the browser or device.3xx: Redirection – the page or resource has moved and server will respond with its new location.2xx: Success – the request succeeded and the server responds with the page or resource.

