304xx

304xx is a series of HTTP status codes used in web development to indicate that the requested resource has not been modified since the last time it was requested. This status code is part of the HTTP protocol, which is the foundation of data communication for the World Wide Web. The 304xx series specifically falls under the category of redirection status codes, which are used to inform the client that the resource they are looking for has not changed and can be retrieved from the cache.

The most commonly used status code in this series is 304 Not Modified. This code is sent by the server to the client when the client has made a conditional request and the resource has not been modified since the last time it was requested. This allows the client to use the cached version of the resource, reducing the amount of data that needs to be transferred and improving the performance of the web application.

The 304xx series of status codes is an important part of web development, as it allows for efficient use of resources and improved performance. By using these status codes, web developers can ensure that their applications are running smoothly and efficiently, even when dealing with large amounts of data.