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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.
DecSync is good but there aren't any software that can read the folder containing contacts, calendar and tasks unless you use the version of radicale that supports DecSync which at this point isn't p2p anymore. So that way you can connect Thunderbird to it.
I've been using Etesync for 3ish years and have had zero issues. I just pay them $13 a year to host, but its open source and you can run your own server.
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