QuestDB is an open source database for time series, events, and analytical workloads with a primary focus on performance. https://github.com/questdb/questdb
Hands down fastest database I've ever used. There is definitely a slight learning curve to getting it operational, and because of how new it is, it can be hard to find solutions online. That is a small price to pay for the fastest database ever. Not to mention that the community is incredibly strong, with remarkably fast response times. Cannot recommend enough.
