The XSD contains a confusing description for expiration/interval.
wakeUpInterval sould be interval!

<xs:complexType name="expiration">
....
<xs:attribute name="interval" type="xs:long" default="5000">
<xs:annotation>
<xs:documentation>Interval (in milliseconds) between subsequent runs to purge expired entries from memory and any cache stores. If you wish to disable the periodic eviction process altogether, set wakeupInterval to -1.</xs:documentation>
</xs:annotation>
</xs:attribute>
</xs:complexType>