Express (Distributed operating systems), v8.0 > Secure applications and their environment > Authenticate users > Select a registry or repository > Manage realms in a federated repository > Virtual member manager > Tune
Tune the virtual member manager LDAP cache
Use the cache control parameters to adjust and improve the performance of the cache.
About this task
Virtual member manager caches the query results from repositories (for example, an LDAP server).
You need to monitor the status of the cache and makes adjustments to the cache control parameters to improve the performance of the cache. Because the WebSphere Dynamic Cache (DynaCache) is used as the implementation of the virtual member manager cache, you can utilize the tools and services provided by WebSphere DynaCache to monitor the virtual member manager cache.
The parameters that you can adjust to control the virtual member manager cache are:
cacheSize
Defines the maximum size for the cache.
cacheTimeOut
Specifies how long the cached entries can stay in the cache before being invalidated.
cacheDistPolicy
Distribution policy for the dynamic cache in a cluster environment.
attributeSizeLimit
Maximum number of attributes that can be stored in the cache.
searchResultSizeLimit
Maximum number of search results that can be stored in the cache. For more information on using these parameters, see the topic, IdMgrRepositoryConfig command group in the WAS information center.
Parent topic: Tune