<ul><li>Prometheus stores data in time series with metric names and labels like handler, method, code, etc.</li><li>Matchers are used to filter data in Prometheus, common matchers include Equality Matcher (=), Negative Equality Matcher (!=), Regular Expression Matcher (=~), and Negative Regex Matcher (!~).</li><li>Equality Matcher (=) checks if a label is exactly equal to a value, Negative Equality Matcher (!=) selects all time series except those where the label equals the value.</li><li>Regular Expression Matcher (=~) allows regex pattern matching, and Negative Regex Matcher (!~) excludes label values that match the regex.</li></ul>

Understanding Prometheus Matchers with Real Examples

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