[Xcelerate]

> understand the statistics of how metrics work

Haha, since you worked on Scuba I’ll mention IMO this point was by far the biggest flaw of ODS. No one ever performed the metric rollups correctly. Average of averages? And at what granularity? ODS downsampled the older time series data but now perhaps you’re taking a percentile over a “max of maxes”. Except it only sometimes used that method of downsampling automatically.

And I seem to recall the labels “daily”, “weekly”, and “monthly” not being intuitive either, and two of them meant the same thing... that was quite a mess to work with.

A lot of the autoscaling systems were wonky because the ODS metrics they were based upon didn’t represent what people thought they did.

[isburmistrov]

Never in the world I would have expected my post to cause the discussion about ODS flaws :D