cardinality term
number of unique label combinations on a metric
High cardinality = huge memory/storage cost. Adding `user_id` as a label = millions of series. Avoid: high-cardinality labels in metrics. Push that data to logs/traces instead.
number of unique label combinations on a metric
High cardinality = huge memory/storage cost. Adding `user_id` as a label = millions of series. Avoid: high-cardinality labels in metrics. Push that data to logs/traces instead.