HTTP 200 OK vs 226 IM Used
Both HTTP 200 (OK) and 226 (IM Used) belong to the 2xx Success category. 200 indicates that the request succeeded. The meaning depends on the HTTP method: GET returns the resource, POST reports the action result, HEAD returns headers only. Meanwhile, 226 means 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.
Description
The request succeeded. The meaning depends on the HTTP method: GET returns the resource, POST reports the action result, HEAD returns headers only.
When You See It
The most common HTTP response — indicates the request was processed successfully.
How to Fix
No fix needed. The request succeeded as expected.
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.
Key Differences
HTTP 200: The request succeeded. The meaning depends on the HTTP method: GET returns the resource, POST reports the action result, HEAD returns headers only.
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.
You encounter 200 when the most common HTTP response — indicates the request was processed successfully.
You encounter 226 when when using delta encoding to reduce bandwidth.
When to Use Which
For 200 (OK): No fix needed. The request succeeded as expected. For 226 (IM Used): Rarely encountered. The response uses Instance Manipulations (IM) as specified.