Metrics Management¶

After completing metrics data collection, you can view all reported measurements and their associated metrics, tags, time series count statistics, day-over-day changes, and data storage policies in Metrics Management.

Measurement¶

A measurement is a collection of similar metrics, containing multiple metrics and tags. A single measurement displayed by the system includes the following information:

• Metrics
• Tags
• Time Series Statistics

Metrics¶

Metrics reflect the operational status of a system (e.g., CPU usage, page load time) and consist of a metric name (identifier) and a metric value (specific numerical value).

Clicking on a measurement name allows you to view complete metric details (metric name, original metric, field type, unit, description) and supports the following operations:

• Filter metrics based on keywords in the search bar;
• Export the metric list as a CSV file;
• In the options column, support one-click metric analysis;
• Click to expand metric data to edit metric configuration.

Tags¶

The attributes of a data point collection object are identified by tags. These tags are presented as key-value pairs, consisting of a tag key and a tag value. A single data point can have multiple tags attached.

Clicking on a measurement name allows you to view the corresponding tag list, including tag key, tag value count statistics, description, and other information, and supports the following operations:

• Filter tags based on keywords in the search bar;
• Export the tag list as a CSV file.

Time Series¶

Time series are dynamically generated by tag combinations and include metrics, tags (fields), and data storage duration. Among these, "metric + tags (field combination)" constitutes the primary key for data storage.

In TrueWatch, this section displays the total number of time series for the current measurement and presents the unique value count, time series count, and day-over-day changes for a single metric/tag through metric statistics charts and tag statistics charts.

Calculation Logic¶

The metric/tag statistics charts perform statistical calculations based on the hierarchy: Overall Metrics -> Single Metric -> Grouping of that metric by tags -> Specific tag values -> Global view of all tags + tag-specific statistics.

In the statistics charts, the calculation logic for each field is as follows:

Storage Policy¶

Storage policies are divided into two levels:

• Workspace Global Settings: Applied to all measurements

• Measurement Custom Settings: Settings for specific measurements

Modifying Policies¶

The priority of measurement custom settings is higher than workspace global settings. That is: after customizing a storage policy for a measurement, modifying the global settings will not affect that measurement.

Important Notes¶

When modifying a measurement's storage policy, pay attention to the following key rules:

1. Immediate Data Deletion: After modifying the policy, the data for that measurement under the original policy will be permanently deleted and cannot be recovered. Subsequent policy modifications will also delete the data under the current policy;
2. Independent Storage Mechanism: After setting a custom policy, the measurement data is stored independently. Modifying the global policy duration at this point will not affect measurements that already have custom settings;
3. Reverting to Global Policy: When switching back to "Global Default", data will be stored back into the global repository. Thereafter, modifying the global policy will affect this measurement accordingly;
4. Same Duration Does Not Equal Same Policy: Even if the custom duration matches the global one, data is still stored independently. Example: Setting a measurement to 7 days when the global setting is 7 days still constitutes independent storage.

Modification Paths¶

Global Settings¶

Go to Manage > Workspace Management > Risky Operations > Change Data Storage Policy > Metrics, and select the storage duration.

Measurement Custom Settings¶

Go to Metrics > Metrics Management, and in the options column on the right side of a single measurement, click the icon to select the duration. If not set, it automatically inherits the Global Policy.