2xx:
The HTTP status messages in the 200 series reflect that the request was successful in some form.
200 OK:
This is the most common HTTP status message. It indicates that the request was successful and the server was able to deliver on the request.
201 Created:
This HTTP status message indicates that the request was fullfilled with a new resource created at that URI.
202 Accepted:
The request has been accepted for processing, but it has not been completed yet. The request may be rejected at a later time when the processing occurs.
203 Non-Authoritative Information:
The returned meta-information is not the authoritative set as defined by the origin server. This response code is not required to be used, and is only used when the response would otherwise be 200 OK.
204 No Content:
The server has fullfilled the request, but doesn't need to return an entity-body. The user agent will not change the current document view.
205 Reset Content:
The server has fullfilled the request and the user agent will reset the current document view.
206 Partial Content:
The server has fullfilled the partial GET request from the user agent.
