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I've been using it recently and I will say it is definitely harder to perform common time series queries than something like InfluxDB.

Can you elaborate? Harder as in writing queries or harder as in making queries performant?

Writing them primarily, for example there isn't a super simple replacement for something like `derivative` (https://docs.influxdata.com/flux/v0.x/stdlib/universe/deriva...) in timescaledb.