You can use properties files to create, modify, or delete
eviction policy properties and custom properties.
Before you begin
Determine the changes that you want to make to your eviction
policy configuration or its configuration objects.
Start the
wsadmin scripting tool. To start wsadmin using the Jython language,
run the wsadmin -lang jython command from the bin directory
of the server profile.
About this task
Using a properties file, you can create, modify, or delete
an eviction policy instance. You can also create, modify, or delete
eviction policy custom properties.
Run administrative commands
using wsadmin to create or change a properties file for an eviction
policy, validate the properties, and apply them to your configuration.
Table 1. Actions for eviction policy
properties files. You can create, modify, and delete
eviction policy properties.Action |
Procedure |
create |
Set required properties and then run the applyConfigProperties command. |
modify |
Edit properties and then run the applyConfigProperties command
to modify the value of a custom property. |
delete |
Run the deleteConfigProperties command
to delete a property. If the deleted property has a default value,
the property is set to the default value. To delete the entire eviction
policy, uncomment #DELETE=true and then run the deleteConfigProperties command. |
create Property |
Not applicable |
delete Property |
Not applicable |
Optionally, you can use interactive mode with the commands:
AdminTask.command_name('-interactive')
Procedure
- Create or edit an eviction policy properties file.
- Set eviction policy properties as needed.
Open
an editor on a MemoryCacheEvictionPolicy or DiskCacheEvictionPolicy
properties file. Modify the Environment Variables section to match
your system and set any property value that needs to be changed. To
specify a custom property, edit the AttributeInfo value
and properties values. An example eviction policy properties file
follows:
#
# MemoryCacheEvictionPolicy
#
ResourceType=MemoryCacheEvictionPolicy
ImplementingResourceType=ServletCacheInstance
ResourceId=Cell=!{cellName}:CacheProvider=myCacheProvider:ServletCacheInstance=jndiName#myServletCacheJndiName:MemoryCacheEvictionPolicy=
AttributeInfo=memoryCacheEvictionPolicy
#DELETE=true
#
#
#Properties
#
lowThreshold=80 #integer,default(80)
highThreshold=95 #integer,default(95)
#
# DiskCacheEvictionPolicy
#
ResourceType=DiskCacheEvictionPolicy
ImplementingResourceType=ServletCacheInstance
ResourceId=Cell=!{cellName}:CacheProvider=myCacheProvider:ServletCacheInstance=jndiName#myServletCacheJndiName:DiskCacheEvictionPolicy=
AttributeInfo=diskCacheEvictionPolicy
#DELETE=true
#
#
#Properties
#
algorithm=NONE #ENUM(RANDOM|SIZE|NONE),default(NONE)
lowThreshold=90 #integer,default(90)
highThreshold=95 #integer,default(95)
#
EnvironmentVariablesSection
#
#
#Environment Variables
cellName=myCell04
- Run the applyConfigProperties command
to create or change an eviction policy configuration.
Running
the applyConfigProperties command applies the properties
file to the configuration. In this Jython example, the optional -reportFileName parameter
produces a report named report.txt:
AdminTask.applyConfigProperties(['-propertiesFileName myObjectType.props -reportFileName report.txt'])
- If you no longer need the eviction policy or an existing
custom property, you can delete the entire eviction policy object
or the custom property.
Results
You can use the properties file to configure and manage
an eviction policy object and its properties.
What to do next
Save the changes to your configuration.