[acconsta]

It's good to have competition in this area. Influx is giving me whiplash (it's on its third database engine in six months!)

The circular buffer approach is fine, but it does have the drawback of being unable to represent variable-length data (like key-value pairs). It's also harder to compress the data.

Can a GROUP-BY do windowed aggregations? Like, take an average over ten-minute windows? My SQL knowledge is not great.