[nhourcard]

I agree that the difference in versions is confusing!

If InfluxDB is not the right fit, QuestDB can be a good drop-in replacement as it uses a high-performance implementation of the InfluxDB Line Protocol for ingesting data and SQL for queries. There are several SQL extensions for time-series data to simplify queries, such as SAMPLE BY (downsampling), WHERE ... IN (time intervals), LATEST ON (latest records) and ASOF JOIN (time-series joins).

An intro about QuestDB can be found here: https://questdb.io/docs/ And a live demo with three datasets (one of them has got data being streamed live): https://demo.questdb.io/

Another well-known time-series database includes TimescaleDB, an extension built on top of Postgres.

I should disclose that I'm a co-founder of QuestDB.