3xx リダイレクト (Redirection)

リクエストを完了するには追加の動作（主に別の URL への移動）が必要です。301・302 が代表例です。

300Multiple ChoicesThe request has more than one possible response; the client or user should choose one.301Moved Permanently よく使うThe resource has permanently moved to a new URL given in the Location header.302Found よく使うThe resource temporarily resides at a different URL; keep using the original URL.303See OtherThe response is at another URL and should be retrieved with GET.304Not Modified よく使うThe cached copy is still valid, so no body is sent.305Use ProxyThe resource must be accessed through the proxy in the Location header. Deprecated.307Temporary RedirectTemporary redirect that requires the client to reuse the same HTTP method.308Permanent RedirectPermanent redirect that requires the client to reuse the same HTTP method.