The rise of time-series database is accelerated by massive IoTs. It can provide users low latency queries & distributed storage. Competition of TSDB vendors is dynamic and progressive on which newcomers introduce better & better performance and functionalities.
The full comparison is as follows.
https://docs.google.com/spreadsheets/d/1sMQe9oOKhMhIVw9WmuCEWdPtAoccJ4a-IuZv4fXDHxM/edit#gid=0