=item MEMCACHED_BEHAVIOR_USER_DATA
This allows you to store a pointer to a specifc piece of data. This can be
-retrieved from inside of memcached_fetch_exectue(). Cloning a memcached_st
-will copy the pointer to the clone.
+retrieved from inside of memcached_fetch_execute(). Cloning a memcached_st
+
+will copy the pointer to the clone. This was deprecated in 0.14 in favor
+of memcached_callback_set(3). This will be removed in 0.15.
=item MEMCACHED_BEHAVIOR_BUFFER_REQUESTS
connection. Quiting the connection or closing down the connection will also
cause the buffered data to be pushed to the remote connection.
+=item MEMCACHED_BEHAVIOR_VERIFY_KEY
+
+Enabling this will cause libmemcached(3) to test all keys to verify that they
+are valid keys.
+
+=item MEMCACHED_BEHAVIOR_SORT_HOSTS
+
+Enabling this will cause hosts that are added to be placed in the host list in
+sorted order. This will defeat consisten hashing.
+
+=item MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT
+
+In non-blocking mode this changes the value of the timeout during socket
+connection.
+
=back
=head1 RETURN