US Patent 11792019 Providing quality of service for certificate management systems

A system for providing quality of service (QoS) levels to clients requesting credentials from a credential management service is provided. The system includes an application programming interface (API) operable to receive credential requests from each of a plurality of clients, each credential request including a client identifier, and a QoS manager operable to: distribute the credential requests to a corresponding client queue of a plurality of client queues based on the client identifier, select a credential request distributed to the plurality of client queues based on a selection scheme, and transmit the selected credential request to a QoS queue of the credential management service for processing.