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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.
Raspberry Pi would work for this, but know that there is a supply shortage, and you'd likely be paying double the MSRP to get one. Look into them and check out all the projects people have done. You can do a lot with those little things, but you may need a little technical knowledge in unix based operating systems, or just be able to follow some guides online (there are plenty). You could look into using it to manage a virtual tap list, run pi-tilt or pitch (What I used with my own frontend I've thrown together) to track your fermentation, and many other things non brewing related, such as a pi-hole (ad blocker for your entire network), retro games, etc.