You can optionally tag all values added to a custom metric, which can be useful when analysing the test results.
|Counter||A metric that cumulatively sums added values.|
|Gauge||A metric that stores the min, max and last values added to it.|
|Rate||A metric that tracks the percentage of added values that are non-zero.|
|Trend||A metric that calculates statistics on the added values (min, max, average, and percentiles).|