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The PAPs keep track of PDPs, support the deployment of PDP groups and the deployment of a policy set across those PDP groups. A PAP is stateless in a RESTful sense. Therefore, if there is more than one PAP deployed, it does not matter which PAP a user contacts to handle a request. The PAP uses the database (persistent storage) to keep track of ongoing sessions with clients. Policy management on PDPs is the responsibility of PAPs; management of policy sets or policies by any other manner is not supported. The PAPs are identified in the system using a well known address; in the case where a pool of PAPs exist, requests to PAPs are load balanced across the PAPs.
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- Runtime capability to upgrade Policies, change mode of operation for policies (for example: safe mode, test mode) and ability to preserve state for minor/patch version upgrades
- Runtime modes for safe mode, test mode will be implemented as another line of defense against policy conflicts and resolution
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