+ <row><entry>
+ redis</entry><entry>
+ If given and non-empty,
+ a <ulink url="&url.redis;">redis</ulink> context will be created
+ for the connection.
+ This option is inspected by ZOOM when a connection is established.
+ If the <literal>redis</literal> option is given
+ and YAZ is compiled without redis support, an internal
+ diagnostic (10018) will be thrown.
+ redis support is available for YAZ 5.2.0 or later. If this
+ option is supplied for an earlier version of YAZ, it is
+ <emphasis>ignored</emphasis>.
+ The value of this option is a set options, similar to that
+ of the memcached function. At this stage only --server=host[:port]
+ is supported. Later versions of YAZ might honor expiry for various
+ items and other things that tune the redis usage.
+ </entry><entry>none</entry></row>