We used Cassandra for timeseries data for a while. My word of caution would be to set up a dedicated cluster for it. Cassandra is good at a lot of things, but

We used Cassandra for timeseries data for a while. My word of caution would be to set up a dedicated cluster for it. Cassandra is good at a lot of things, but if you have different workloads running on the same cluster, performance is hard to tune. We used it for raw document store (write once, read almost never) and timeseries in the same place (lots of appending, even more reads), and it wasn't great.