[iluzone]

you’re right that there are some similarities here. you can do histogram same way in Trifle just as in Prometheus. and the p95 issue is in both. sum and counts can only get you that far. you can get normal approximation of percentiles, but its a compromise you make.

where the differences are clearer is who is it aimed for. Prometheus is a server you need to operate while Trifle pushes data into a database you already own. and then there’s a part that Prometheus scrapes for your data and you need a pushgateway to be able to push to it. one is build for infrastructure monitoring and the other is a library you use to push your increments.