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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
https://github.com/lbonn/i3-quickterm will probably satisfy your request.
I also use a scratchpad terminal. $mod+i either launches the terminal or toggles its visibility. Have a look at my config file (I use chezmoi to manage to dotfiles but you should get the idea without knowing chezmoi). The "hard" work is done by the i3-launch-or-toggle script.
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