default-collector=org.apache.dubbo.metrics.collector.DefaultMetricsCollector
aggregateMetricsCollector=org.apache.dubbo.metrics.collector.AggregateMetricsCollector
configCenterMetricsCollector=org.apache.dubbo.metrics.collector.ConfigCenterMetricsCollector
histogramMetricsCollector=org.apache.dubbo.metrics.collector.HistogramMetricsCollector
