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This article mainly shows you "what are the reasons for 304 errors in proxy servers", the content is simple and easy to understand, and the organization is clear. I hope it can help you solve your doubts. Let Xiaobian lead you to study and learn "what are the reasons for 304 errors in proxy servers".

When using proxies, it is common for errors to occur on the server or client due to improper operation. Common error status code types are 3xx redirect errors, 4xx client error codes, and 5xx server errors.

304-Resource Not Modified

If the requested resource has not been modified since the last request, the server responds with a "304-Resource Not Modified" code. In this case, the server assumes that it does not need to send the data again because the client already has an unmodified copy of the requested resource. "Last modified" is mentioned in the request header line "If-Modified-Since" or "If-Match." Also, if your page has not changed since the last time the search engine crawler visited the site, it is recommended to return a 304 code to speed up indexing and reduce crawler load.

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