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WEBSPHERE PORTAL V6.1 TUNING GUIDE
WEB CONTENT MANAGEMENT CACHES
In the preceding chapter we described the specific values we modified for the Web Content
Management (WCM) caches in our environments. This chapter describes the Web Content
Management caches and the general parameters for those caches.
WCM Cache Instances
With WebSphere Portal V6.1, the WCM caches are managed via the WebSphere
Application Server administrative console under Resources > Cache instances > Object
cache instances.
W C M I T E M C A C H I N G
services/cache/iwk/strategy – WCM Item caching
Default size: 2000, default lifetime: infinite, usage pattern: regular.
This cache stores internal WCM items. Any WCM item read from the database will first
check this cache. WCM items cover Content, Workflow, Workflow Stages, Workflow
actions, Taxonomies, Categories, Authoring Templates, Presentation Templates, Sites,
Siteareas, and all Library Components. The cache entry will be updated or cleared when
its corresponding WCM Item is updated or deleted.
W C M S U M M A R Y
services/cache/iwk/objectsummary – WCM Summary
Default size: 2000, default lifetime: infinite, usage pattern: regular.
This cache stores summaries of WCM Items. The summaries are used to display in lists
in the authoring portlet or used internally in the WCM API to calculate WCM Item
Document IDs used for Iterators. The cache entry will be cleared when a WCM Item is
updated that will affect this summary.
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