HTTP Status Codes
Quick reference for all common HTTP status codes.
200
OK
Request succeeded
201
Created
Resource created
204
No Content
Success, no body
301
Moved Permanently
Resource moved permanently
302
Found
Temporary redirect
304
Not Modified
Cached version is valid
400
Bad Request
Invalid request syntax
401
Unauthorized
Authentication required
403
Forbidden
Access denied
404
Not Found
Resource doesn't exist
405
Method Not Allowed
HTTP method not supported
409
Conflict
Request conflicts with current state
429
Too Many Requests
Rate limit exceeded
500
Internal Server Error
Server error
502
Bad Gateway
Invalid response from upstream
503
Service Unavailable
Server overloaded or maintenance
504
Gateway Timeout
Upstream server timed out