You can add XML metadata to the cache only through the node on which the Administration Server is running. The Administration Server receives the input, and stores the key and the associated XML metadata in a file, in the following format:
XMLMetatadaCache_<keyname>_.xml
For each XML document that is added to the cache, a new XML MetaData Cache file is created. Once the file is created, the newly added XML document is propagated to all the nodes within the cluster. This ensures that the data is immediately available to any requesting node.
When using the XML MetaData Cache Control in a cluster, if a server on the cluster is restarted and a value changes while the server is offline, the server will receive the change notification when it comes online again.
Note: You cannot modify the XML MetaData Cache when the Administration Server is down.
The following figure describes how data is shared within a cluster.
Figure : Sharing Data Within a Cluster
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