Red Hat SummitChapter 8. Defining File-based Cache Stores
Define a file-based cache store with datagrid-service to persist data to external storage.
Use the XMLStringConfiguration class to provide XML configuration as a string through the Hot Rod interface.
- XML must be valid with the Data Grid configuration schema.
-
Location of your file store should be under the storage volume mounted at
/opt/datagrid/standalone/databecause thedatafolder is aPersistentVolumethat allows data to survive when the container restarts.
As an example, the following main method creates a cache with a distributed configuration that includes a file store:
public static void main(String[] args) {
ConfigurationBuilder cfg = ...
RemoteCacheManager rcm = new RemoteCacheManager(build);
String xml = String.format(
"<infinispan>" +
"<cache-container>" +
"<distributed-cache name=\"%1$s\">" +
"<persistence passivation=\"false\">" +
"<file-store " +
"shared=\"false\" " +
"fetch-state=\"true\" " +
"path=\"${jboss.server.data.dir}/datagrid-infinispan/%1$s\"" +
"/>" +
"</persistence>" +
"</distributed-cache>" +
"</cache-container>" +
"</infinispan>",
"cacheName"
);
RemoteCache<Object, Object> index = rcm.administration()
//Include a flag to make the cache permanent.
.withFlags(CacheContainerAdmin.AdminFlag.PERMANENT)
//Create a cache with the XML configuration
.createCache("cacheName", new XMLStringConfiguration(xml));
System.out.println(index.size());
}
For information about valid file-store configuration options, see the Data Grid configuration schema.
See the Javadocs for more information:
