The name of the bucket that was being operated on.
The cas returned by the server.
The name of the collection that was being operated on.
The context returned by the server helping describing the error.
The key that was being operated on.
The opaque identifier for the request.
The reference id returned by the server for correlation in server logs.
The name of the scope that was being operated on.
The memcached status code returned by the server.
The error context information for a key-value operation.