[edejong]

Currently running 4 JVM based solutions on 2 RPi's in our home. One is a fairly heavy one (OpenHAB 2), consuming 700 MB of memory. The others are simple importers (written in Scala), using around 50 MB each. It runs fast, is extremely stable (> 200 days uptime), very fast response times (< 100 ms), has a built-in dependency manager and is type-safe.

With this setup, I have aggregated more than 4 years of in-home data, ranging from radio-thermostats, 15 thermometers, continuous electricity usage, around 10 z-wave devices, 15 zigbee sensors, Philips Hue Lighting (8 bulbs, 8 switches), local weather updates, InfluxDB storage and a fairly complicated setup for climate control (including presence detection using OwnTracks / WiFi and operation of roller-shutters and sunscreens).