What does http status code mean?

The meaning of http status code: 1. 200, indicating that the request was successfully processed; 2. 301, indicating that the requested web page has been permanently moved to a new location; 3. 400, indicating that the server does not understand the request; 4. 500 , indicating that the server encountered an error and was unable to complete the request.

When doing SEO, it is very necessary to analyze logs, but this step also belongs to the advanced thinking stage of SEO, and we need to study hard.

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What do http status codes mean?

When we analyze logs, we will encounter many http status codes. These status codes have their own meanings. Let’s explain the meaning of each http status code:

1. 200 status code:

Success 2××: The status code of the request was successfully processed.

1, 200: The server has successfully processed the request and provided the requested web page.

2, 204: The server successfully processed the request, but did not return anything.

2. 300 status code:

Redirect 3××: Do not use redirect more than 5 times in each request.

1, 301: The requested web page has been permanently moved to a new location. When URLs change, use the 301 code. Save the new URL in the search engine index.

2, 302: The requested web page is temporarily moved to a new location. The original URL is saved in the search engine index.

3, 304: If the web page has not been updated since the requester's last request, use the 304 code to tell the search engine robot, which can save bandwidth and overhead.

3. 400 status code:

Client error 4××: Indicates that the request may be in error, hindering the server's processing.

1, 400: The server does not understand the syntax of the request.

2, 403: The server refused the request.

3, 404: The server cannot find the requested web page. This code is often returned for web pages that do not exist on the server.

4, 410: The server returns this response after the requested resource is permanently deleted. This code is similar to the 404 (Not Found) code, but is sometimes used instead of the 404 code when the resource existed before and now does not. If the resource has been permanently deleted, 301 should be used to specify the resource's new location.

4. 500 status code:

Server error 5××: Indicates that an internal error occurred when the server processed the request. These errors may be errors on the server itself rather than an error in the request.

1, 500: The server encountered an error and could not complete the request.

2, 503: The server is currently unavailable (due to overload or downtime for maintenance).

Usually, this is only a temporary state. I hope everyone can refer to it when analyzing the log and solve the problem based on the specific status code.

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