=item MEMCACHED_CALLBACK_PREFIX_KEY
You can set a value which will be used to create a domain for your keys.
-The value specified here will be appended to each of your keys. The value can not
+The value specified here will be prefixed to each of your keys. The value can not
be greater then MEMCACHED_PREFIX_KEY_MAX_SIZE and will reduce MEMCACHED_MAX_KEY by
the value of your key. The prefix key is only applied to the primary key,
not the master key.