HTTP 409 Conflict vs 508 Loop Detected
HTTP 409 (Conflict) is a 4xx Client Error response, while 508 (Loop Detected) is a 5xx Server Error response. 409 indicates that the request conflicts with the current state of the server. Often due to concurrent modification or business rule violations. In contrast, 508 means that the server detected an infinite loop while processing the request (WebDAV).
Description
The request conflicts with the current state of the server. Often due to concurrent modification or business rule violations.
When You See It
When trying to create a resource that already exists, or updating a resource that was modified by another request.
How to Fix
Refresh the resource state, resolve conflicts, and retry. Use ETags for optimistic concurrency.
Description
The server detected an infinite loop while processing the request (WebDAV).
When You See It
When WebDAV encounters circular references in bindings.
How to Fix
Fix the circular reference in the WebDAV configuration.
Key Differences
409 is a 4xx Client Error response, while 508 is a 5xx Server Error response.
HTTP 409: The request conflicts with the current state of the server. Often due to concurrent modification or business rule violations.
HTTP 508: The server detected an infinite loop while processing the request (WebDAV).
You encounter 409 when when trying to create a resource that already exists, or updating a resource that was modified by another request.
You encounter 508 when when WebDAV encounters circular references in bindings.
When to Use Which
For 409 (Conflict): Refresh the resource state, resolve conflicts, and retry. Use ETags for optimistic concurrency. For 508 (Loop Detected): Fix the circular reference in the WebDAV configuration.