HTTP 226 IM Used vs 308 Permanent Redirect
HTTP 226 (IM Used) is a 2xx Success response, while 308 (Permanent Redirect) is a 3xx Redirection response. 226 indicates that the server has fulfilled a GET request for the resource, and the response is a representation of the result of one or more instance-manipulations. In contrast, 308 means that the resource has been permanently moved. Like 301, but guarantees the HTTP method will NOT be changed.
Description
The server has fulfilled a GET request for the resource, and the response is a representation of the result of one or more instance-manipulations.
When You See It
When using delta encoding to reduce bandwidth.
How to Fix
Rarely encountered. The response uses Instance Manipulations (IM) as specified.
Description
The resource has been permanently moved. Like 301, but guarantees the HTTP method will NOT be changed.
When You See It
For permanent URL changes where POST requests must remain POST.
How to Fix
Update all references to the new URL. The HTTP method is preserved.
Key Differences
226 is a 2xx Success response, while 308 is a 3xx Redirection response.
HTTP 226: The server has fulfilled a GET request for the resource, and the response is a representation of the result of one or more instance-manipulations.
HTTP 308: The resource has been permanently moved. Like 301, but guarantees the HTTP method will NOT be changed.
You encounter 226 when when using delta encoding to reduce bandwidth.
You encounter 308 when for permanent URL changes where POST requests must remain POST.
When to Use Which
For 226 (IM Used): Rarely encountered. The response uses Instance Manipulations (IM) as specified. For 308 (Permanent Redirect): Update all references to the new URL. The HTTP method is preserved.