HTTP 101 Switching Protocols vs 301 Moved Permanently
HTTP 101 (Switching Protocols) is a 1xx Informational response, while 301 (Moved Permanently) is a 3xx Redirection response. 101 indicates that the server understands the Upgrade header field request and indicates which protocol it is switching to. In contrast, 301 means that the resource has been permanently moved to a new URL. All future requests should use the new URL. Search engines will transfer link equity to the new URL.
描述
The server understands the Upgrade header field request and indicates which protocol it is switching to.
何时出现
When upgrading from HTTP/1.1 to WebSocket, or to HTTP/2.
如何修复
This is normal behavior during protocol upgrades. Ensure your client supports the target protocol.
描述
The resource has been permanently moved to a new URL. All future requests should use the new URL. Search engines will transfer link equity to the new URL.
何时出现
After domain migrations, URL restructuring, or when consolidating duplicate URLs.
如何修复
Update links and bookmarks to the new URL in the Location header. For SEO, this is the preferred redirect for permanent moves.
主要区别
101 is a 1xx Informational response, while 301 is a 3xx Redirection response.
HTTP 101: The server understands the Upgrade header field request and indicates which protocol it is switching to.
HTTP 301: The resource has been permanently moved to a new URL. All future requests should use the new URL. Search engines will transfer link equity to the new URL.
You encounter 101 when when upgrading from HTTP/1.1 to WebSocket, or to HTTP/2.
You encounter 301 when after domain migrations, URL restructuring, or when consolidating duplicate URLs.
何时使用哪个
For 101 (Switching Protocols): This is normal behavior during protocol upgrades. Ensure your client supports the target protocol. For 301 (Moved Permanently): Update links and bookmarks to the new URL in the Location header. For SEO, this is the preferred redirect for permanent moves.