Portlet container settings
Configure and manage the portlet container of this application server.
From the admin console, click...
Servers > Server Types > WebSphere application servers > server > Portlet Container Settings > Portlet container.
Enable portlet fragment cache
Create a cached entry when a portlet is invoked, similar to servlet caching of the web container settings.
Portlet fragment caching requires that servlet caching is enabled. Therefore, enabling portlet fragment caching automatically enables servlet caching. Disabling servlet caching automatically disables portlet fragment caching.
Related:
Portlets Configure portlet fragment caching Portlet container custom properties