HTTP 101 Switching Protocols vs 201 Created
HTTP 101 (Switching Protocols) is a 1xx Informational response, while 201 (Created) is a 2xx Success response. 101 indicates that the server understands the Upgrade header field request and indicates which protocol it is switching to. In contrast, 201 means that the request succeeded and a new resource was created. Typically returned after POST or PUT requests that create a new entity.
Description
The server understands the Upgrade header field request and indicates which protocol it is switching to.
Quand vous le voyez
When upgrading from HTTP/1.1 to WebSocket, or to HTTP/2.
Comment résoudre
This is normal behavior during protocol upgrades. Ensure your client supports the target protocol.
Description
The request succeeded and a new resource was created. Typically returned after POST or PUT requests that create a new entity.
Quand vous le voyez
After successfully creating a new user, post, order, or other resource via a REST API.
Comment résoudre
No fix needed. Check the Location header for the URL of the new resource.
Différences clés
101 is a 1xx Informational response, while 201 is a 2xx Success response.
HTTP 101: The server understands the Upgrade header field request and indicates which protocol it is switching to.
HTTP 201: The request succeeded and a new resource was created. Typically returned after POST or PUT requests that create a new entity.
You encounter 101 when when upgrading from HTTP/1.1 to WebSocket, or to HTTP/2.
You encounter 201 when after successfully creating a new user, post, order, or other resource via a REST API.
Quand utiliser lequel
For 101 (Switching Protocols): This is normal behavior during protocol upgrades. Ensure your client supports the target protocol. For 201 (Created): No fix needed. Check the Location header for the URL of the new resource.