Using object cache instances

Perform this task so that your application can access dynamic cache object cache instances with the DistributedMap or DistributedObjectCache interfaces.

1. Configure one or more cache instances.
   1. In the administrative console, click Resources > Cache instances > Object cache instances.
   2. Specify the scope for the cache instance.

      Cell scope makes the cache instance available to all servers within the cell. Node scope makes the cache instance available to all servers on the particular node. Cluster scope makes the cache instance available to all members in a specified cluster. Server scope makes the cache instance available to only the selected server. You can mix scopes, if necessary.

      WebSphere Application Server Express® has the node and server scopes, which you can mix.

      Note: You cannot create cache instances (object or servlet) at different scopes with the same cache name or JNDI name.
   3. Click Apply after changing the scope.
   4. Click New.
   5. Enter the Java™ Naming and Directory Interface (JNDI) name for this cache instance.

      This is name that you pass to the InitialContext lookup() method from within your application. For example, services/cache/instance_one.

   6. Enter or modify other properties as needed.
2. Update your application.
   To store and retrieve objects in an object cache instance, you need a DistributedMap or DistributedObjectCache reference for the named object cache instance. See Using the DistributedMap and DistributedObjectCache interfaces for the dynamic cache for more information.