Use this task to configure servlet cache instances.
Before you begin
Before you begin, enable the dynamic cache service.
About this task
Perform this task so that your application can access dynamic cache servlet cache
instances. Using servlet cache instances can improve the performance of your application because you
can store the output and the side effects of an invoked servlet. Servlet cache instances also give
you the necessary control over the cache for multiple applications that are running in an
application server. Refer to the Cache instances topic for more information.
Procedure
- Enable servlet caching.
Refer to the Configuring servlet caching topic for
more information.
- Configure one or more cache instances.
- In the administrative console, click Resources > Cache instances >
Servlet cache instances.
- Specify the scope of the cache instance.
Specify a scope of cell to make
the cache instance available to all the servers that are in the cell. Node scope makes the cache
instance available to all servers in a node. Server scope makes the cache instance available to the
selected server only. If necessary, you can mix the scopes.
Note: You cannot create cache instances
(object or servlet) at different scopes with the same cache name or JNDI
name.
- Click Apply to save the scope.
- Specify the settings for the cache instance.
The Name and Java™ Naming and
Directory interface (JNDI) name fields are required. The JNDI name is the name attribute that is
specified in the <cache-instance> element in the
cachepec.xml
file. An
example of a JNDI name that is specified in the cachespec.xml file
follows:
<cache-instance name="services/cache/instance_one">
In this example, specify
services/cache/instance_one as the JNDI
name.
- Update your application. To use a servlet cache instance, you must specify a
<cache-instance> element that has a name that is equal to the JNDI Name for this cache
instance.