100’s = its informational status codes that tell the server the requset information 200’s = its success codes that tell the client that its request was accepted 300’s = its redirection codes that tell the client that the resource they are requesting isn’t available at the expected location anymore 400’s = its client error codes that are all about invalid requests a client sent to a server. 500’s = its server error codes. Often they indicate problems with overwhelmed servers
mean This code tells the client that the request was valid, but its processing will finish sometime in the future .
This tells the client to use another URL to access the resource and not use the current URL anymore.
code 204
code 410
The client has authorized or doesn’t need to authorize itself, but still has no permissions to access the resource.