Summarize metrics with random deletion

You have a metric for which you have a result every second You can’t keep this granularity forever; it would be too big Standard solution: produce e.g. hourly logs with summaries e.g. min max mean p50 p99 My suggested alternative: just keep the original data points, but randomly delete some You can then run any aggregations over them when required

How does random deletion affect expected percentiles?

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