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Target customers: DCDN users. Features released: CloudMonitor collects the following additional metrics of DCDN: the number of IPA domain names, average time that it costs IPA edge nodes to process the first requests, connection failure rate of the origin within a specified period, error rate of the origin within a specified period, timeout rate of the origin within a specified period, number of connections to IPA edge nodes, outbound bandwidth of IPA edge nodes, number of new connections to IPA edge nodes, outbound bandwidth of the origin, and average time that it costs the origin to process the first requests. You can use the CloudMonitor API to query the monitoring data and set alert rules for the metrics. When a metric value reaches the specified threshold, CloudMonitor sends an alert to a relevant contact.