-=item B<--cache> | B<--nocache>
-
-Force the use of the caching daemon or force direct file access. If B<--cache>
-is given, B<RRDTool> will try to contact the caching daemon B<RRDd> and will
-fail if it cannot connect to the daemon. If the connection is successfully
-established the values will be sent to the daemon instead of accessing the
-files directly. If B<--nocache> is given no connection attempt is made. If
-neither option is specified B<RRDTool> will try to contact the daemon and, if
-no connection may be established, will fall back to direct file access.
-This option is available for the B<update> command only.
-