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The Policy Framework Platform components should be are themselves designed as micro services that are easy to configure and deploy via Docker images and K8S both supporting resiliency and scalability if required
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. PAPs and PDPs are deployed by the underlying ONAP management infrastructure and are designed to comply with the ONAP interfaces for deploying containers.
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.
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Policy management on PDPs is the respons
- 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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