HTTP

HTTP Status Code 400 represents Bad Request. This code indicates that the server could not understand the request due to malformed syntax or an invalid request message. When a client sends a 400 error, it typically suggests an issue with the request itself, such as missing required parameters, incorrect formatting, or invalid characters. The client should review and correct the request before resubmitting.

HTTP Status Code 308 refers to Permanent Redirect. This status code indicates that the requested resource has been permanently moved to a new URL, and all future requests should be made to the new location. Unlike 301 Moved Permanently, 308 ensures that the request method, such as POST or PUT, remains the same after redirection. This makes it a more reliable choice when a specific method should be retained during a permanent redirect.

HTTP Status Code 307 refers to Temporary Redirect. It indicates that the requested resource has been temporarily moved to a different URL, and the client should use the same HTTP method (such as GET or POST) for the new location. Unlike a 302 Found status, 307 guarantees that the request method will not be changed when redirected.

HTTP Status Code 306 was initially intended to indicate Switch Proxy. It was meant to inform the client that future requests should use a specified proxy. However, this status code is no longer used and has been reserved for future use. It does not have any function in current HTTP standards and is rarely, if ever, seen in modern web applications.

HTTP Status Code 305 refers to Use Proxy. It indicates that the requested resource must be accessed through a specified proxy, as provided in the response. This status code informs the client to connect to the requested server through a proxy server for accessing the resource. However, due to potential security concerns, many modern clients, including browsers, no longer support this status code.

HTTP Status Code 304 refers to Not Modified. It indicates that the requested resource has not changed since the last time it was fetched, allowing the client to use a cached version instead of downloading the content again. This status code is typically used in conjunction with caching headers like If-Modified-Since or If-None-Match in HTTP requests to reduce bandwidth and improve load times by leveraging the client’s cached data.

HTTP Status Code 303 refers to See Other. It indicates that the server is redirecting the client to a different resource, typically a new URI provided in the response’s Location header. This status code suggests that the client should retrieve the resource using a GET request to the specified URI, regardless of the original request method (like POST or PUT). It's commonly used to redirect users to a confirmation or result page after submitting a form.

HTTP Status Code 302 refers to Found. It indicates that the requested resource has been temporarily moved to a different URI, which is provided in the response's Location header. This status code tells the client that it should perform a temporary redirect to the new location but should continue to use the original URI for future requests. HTTP clients like browsers will typically follow the redirect to the new location automatically.

HTTP Status Code 301 refers to Moved Permanently. This code indicates that the requested resource has been permanently moved to a new URI. The response will include the new URL in the Location header, and future requests for the resource should use this new URL. Clients and user agents, including browsers, should update their bookmarks and links to reflect this new location. This status is essential for SEO purposes, as it helps search engines understand that the resource has a new permanent address.

HTTP Status Code 300 refers to Multiple Choices. This code indicates that the request has more than one possible response. The user or user agent should choose one of the options and resubmit the request. The response typically includes a list of the available options or choices for the requested resource, allowing clients to decide which one to use. This status is often seen when resources have multiple representations or formats, such as different versions of the same document or media types.