3xx Redirection
Further action needed — follow the redirect.
7 status codes
300 Multiple Choices
There's more than one version — you pick.
301 Moved Permanently
This URL is gone for good — update your bookmarks.
302 Found
Over here for now — but this might change.
303 See Other
The result is over there — go GET it.
304 Not Modified
Nothing changed — use what you've got cached.
307 Temporary Redirect
Same as 302, but your POST stays a POST.
308 Permanent Redirect
Permanently moved — and your POST stays a POST.