CNCF Incubating  ## Metric, Tracing, Logging  [Image](/uploads/documents/a/4/4/e/a44e053014677b442fcff9d349be0ea1/p7_1.jpg) Service B ## Observe on mesh ## Metric from Service Mesh by native supported Control flow during request processing Config data to Envoys TLS SkyWalking backend Policy checks, telemetry HTTP/1.1, HTTP/2, gRPC, TCP with or without TLS Metric svcA TLS certs to Envoy Tracing Service A Analysis Core Query Core svcB ![Image](/upload

Tom|26|45%|96|121.5479431.32318|21|...| ## Why we choose it ## Time-Series Database |Name|Age|Metric|Time Interval|00:00|00:01|...|59:59| |---|---|---|---|---|---|---|---| |Tracy|22|Humidity|2019/10/10/10|45%| it SELECT HeartRate FROM ... WHERE Time BETWEEN ... AND ... AND Name = "Tom" |Name|Age|Metric|Time Interval|00:00|00:01|...|59:59| |---|---|---|---|---|---|---|---| |Tracy|22|Humidity|2019/10/10/10|45%| 9 billion Rows ## How we do ## Column-Orient Model :) SELECT value FROM benchmark.tags WHERE (metric_name = 'cpu-usage_user') AND ((created_at >= '2016-01-01 08:00:00') AND (created_at

getMetrics(). Metric data is collected at the specified intervals and is retained internally. The interval and the number of retained samples can be set with setupMetrics(). Both metric data and collection settings are not persistent, they are discarded as soon as VBoxSVC process terminates. Moreover, metric settings and data associated with a particular VM only exist while VM is running. They disappear set up metric collection parameters. Metrics are organized hierarchically, with each level separated by a slash (/) character. Generally, the scheme for metric names is like this: Category/Metric[/Sub

getMetrics(). Metric data is collected at the specified intervals and is retained internally. The interval and the number of retained samples can be set with setupMetrics(). Both metric data and collection settings are not persistent, they are discarded as soon as VBoxSVC process terminates. Moreover, metric settings and data associated with a particular VM only exist while VM is running. They disappear set up metric collection parameters. Metrics are organized hierarchically, with each level separated by a slash (/) character. Gener- ally, the scheme for metric names is like this: Category/Metric[/Sub

getMetrics(). Metric data is collected at the specified intervals and is retained internally. The interval and the number of retained samples can be set with setupMetrics(). Both metric data and collection settings are not persistent, they are discarded as soon as VBoxSVC process terminates. Moreover, metric settings and data associated with a particular VM only exist while VM is running. They disappear set up metric collection parameters. Metrics are organized hierarchically, with each level separated by a slash (/) character. Generally, the scheme for metric names is like this: Category/Metric[/Sub

getMetrics(). Metric data is collected at the specified intervals and is retained internally. The interval and the number of retained samples can be set with setupMetrics(). Both metric data and collection settings are not persistent, they are discarded as soon as VBoxSVC process terminates. Moreover, metric settings and data associated with a particular VM only exist while VM is running. They disappear set up metric collection parameters. Metrics are organized hierarchically, with each level separated by a slash (/) character. Generally, the scheme for metric names is like this: Category/Metric[/Sub

getMetrics(). Metric data is collected at the specified intervals and is retained internally. The interval and the number of retained samples can be set with setupMetrics(). Both metric data and collection settings are not persistent, they are discarded as soon as VBoxSVC process terminates. Moreover, metric settings and data associated with a particular VM only exist while VM is running. They disappear set up metric collection parameters. Metrics are organized hierarchically, with each level separated by a slash (/) character. Generally, the scheme for metric names is like this: Category/Metric[/Sub

getMetrics(). Metric data is collected at the specified intervals and is retained internally. The interval and the number of retained samples can be set with setupMetrics(). Both metric data and collection settings are not persistent, they are discarded as soon as VBoxSVC process terminates. Moreover, metric settings and data associated with a particular VM only exist while VM is running. They disappear set up metric collection parameters. Metrics are organized hierarchically, with each level separated by a slash (/) character. Generally, the scheme for metric names is like this: Category/Metric[/SubM

getMetrics(). Metric data is collected at the specified intervals and is retained internally. The interval and the number of retained samples can be set with setupMetrics(). Both metric data and collection settings are not persistent, they are discarded as soon as VBoxSVC process terminates. Moreover, metric settings and data associated with a particular VM only exist while VM is running. They disappear set up metric collection parameters. Metrics are organized hierarchically, with each level separated by a slash (/) character. Generally, the scheme for metric names is like this: Category/Metric[/Sub