You’re definitely not wrong, but if you simply can’t operate a system to store everything for some reason, sampling is a lot better than just doing an aggregati

You’re definitely not wrong, but if you simply can’t operate a system to store everything for some reason, sampling is a lot better than just doing an aggregation on one dimension and throwing everything else away. For anyone reading this who is interest in a practical application with sampled operational data, check out Facebook Scuba. https://research.fb.com/publications/scuba-diving-into-data-at-facebook/ https://research.fb.com/publications/scuba-diving-into-data-...