+ { .length= sizeof(request.bytes), .buffer= request.bytes },
+ { .length= ptr->prefix_key_length, .buffer= ptr->prefix_key },
+ { .length= key_length, .buffer= key }
+ };
+
+ memcached_return_t rc;
+ if ((rc= memcached_vdo(instance, vector, 3, true)) != MEMCACHED_SUCCESS)
+ {
+ memcached_io_reset(instance);
+ return (rc == MEMCACHED_SUCCESS) ? MEMCACHED_WRITE_FAILURE : rc;