DVID returns 204 for a HEAD request to a non-existing key in keyvalue data. This can be confusing because 204 usually means that the resource is fine but the server doesn't bother to return any content. 404 would be a better response for a missing key.
DVID returns 204 for a HEAD request to a non-existing key in keyvalue data. This can be confusing because 204 usually means that the resource is fine but the server doesn't bother to return any content. 404 would be a better response for a missing key.