There is no need for specialized time-series databases, because normal OLAP databases work better for time-series. I see it from my experience with ClickHouse.

There is no need for specialized time-series databases, because normal OLAP databases work better for time-series. I see it from my experience with ClickHouse. It might sound paradoxical, but specialized time-series databases, such as TimescaleDB or InfluxDB, are not good at time-series, compared to normal (boring) OLAP databases.