Use object cache instances

Overview

Perform this task so apps can access dynamic cache object cache instances using:

• DistributedMap
• DistributedObjectCache

Before beginning, enable the dynamic cache service.

Using object cache instances can improve the performance of the application because we can programmatically store and share frequently used objects. By using object cache instances, you also have the necessary control over the dynamic cache when we are running multiple applications in an application server.

 

Set object cache instances

1. Set one or more cache instances.

   1. In the admin 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. We can mix scopes, if necessary.

   3. Click Apply after changing the scope.

   4. Click New.

   5. Enter the JNDI name for this cache instance.

      This is name passed to the InitialContext lookup() method from within the application. For example...

      services/cache/instance_one

   6. Enter or modify other properties as needed.

2. Update the application.

   To store and retrieve objects in an object cache instance, requires a DistributedMap or DistributedObjectCache reference for the named object cache instance.

 

Results

You configured object cache instances that we can access programmatically with the DistributedMap and DistributedObjectCache interfaces.

 

Next steps

See Additional APIs for more information about the DistributedMap or DistributedObjectCache interfaces.

 

Related tasks

Use the DistributedMap and DistributedObjectCache interfaces for the dynamic cache
Cache instances