Shameless plug, but XTDB v2 is being built for low-latency bitemporal queries over columnar storage and might be applicable: https://docs.xtdb.com/quickstart/qu

Shameless plug, but XTDB v2 is being built for low-latency bitemporal queries over columnar storage and might be applicable: https://docs.xtdb.com/quickstart/query-the-past.html https://docs.xtdb.com/quickstart/query-the-past.html We've not been developing v2 with ML feature serving in mind so far, but I would love to speak with anyone interested in this use case and figure out where the gaps are.