There are steps to setup the policy expression in the system node as it includes the overall repository of the system and it is necessary to maintain the registry of the system. The system node uses the static caching of the system for that policies can be created. 

The steps those are REQUIRED as FOLLOWS:

For the static caching the name of the policy expression gets created for the HTTP objects that need to be accessed and ALLOWED to be controlled by the system node. The objects are like IMAGES consisting of GIF, jpg, png, etc., JavaScripts that are allowed to provide the interaction between the client and the server, css that gives the visual representation of the overall design and the system to make it visually more appealing. The name of the policy expressions are added to show the increased compression like js and js_content_type.

There are steps to setup the policy expression in the system node as it includes the overall repository of the system and it is necessary to maintain the registry of the system. The system node uses the static caching of the system for that policies can be created. 

The steps those are required as follows:

For the static caching the name of the policy expression gets created for the HTTP objects that need to be accessed and allowed to be controlled by the system node. The objects are like images consisting of gif, jpg, png, etc., JavaScripts that are allowed to provide the interaction between the client and the server, css that gives the visual representation of the overall design and the system to make it visually more appealing. The name of the policy expressions are added to show the increased compression like js and js_content_type.