Enabling Potlet Fragment caching

WebSphere Portal server can cache output of the portlet at either the application server level or at the remote proxy server. Portlet output caching is turned off by default so you will have to turn it on by following these steps

1. Make sure that Dynamic Caching Service is enabled to server startup
   
   


2. 
   Enable the servlet caching using the WAS Admin console like this
   
   


3. 
   Now enable the Portlet Fragment caching using the WAS Admin Console like this
   
   


4. Restart your WebSphere Portal server for these changes to take effect

Now if you deploy a portlet that asks WPS to cache its output then portal will do that.