org.zkoss.util.label.cache
From Documentation
Property:
org.zkoss.util.label.cache
Applicable: globally in zk.xml via <library-property> not as <custom-attribute>
Default: true [since 8.6.0]
Specifies whether to cache zk-labels.properties. By default, it is enabled. It means the content of zk-labels.properties is loaded and cached at the server. If you are developing a ZK application and you'd like to modify zk-labels.properties without restarting the server, you could disable it.
Please refer to ZK Developer's Reference: Internationalization for more information about zk-label.properties.