Eugene 
Starting to think that using #OpenHAB for my "smarthome" for my case is kinda overkill…
I have some sensors (temperature and humidity), some reed switches for windows and possibly I'll add thermostats for heating batteries (because here, even with 0°C outside, the central heating works for all the money and it is impossible to sleep and work without all opened windows). All things are using #ZigBee so my #server uses some ZigBee coordinator dongle and #zigbee2mqtt with some MQTT broker inside. I already able to read all necessary data from sensors by reading the right MQTT topics.
And the OpenHAB just communicates with my MQTT broker and displays some nice widgets on the Web UI. This is cool, because I don't need to think about how to work with MQTT and how to output data — all somehow works "by magic".
But the price is very big. The OpenHAB eats near 600 MB of RAM and swaps a lot (near 1 GB for now). It is a largest memory consuming service in my server, which has only 2 GB of RAM (and a RAM prices already increased here 
). And also it's sandbox takes near 3.5 GB of SSD space.
So, do I really need not to think about how it all works under the hood while wearing out my SSD or get some services OOMed if I disable swap and start e.g. using BorgBackup? Looks like the game is not worth the candle. I can literally pick #EclipseMosquitto #C library, unwrap some memories about how to use CGI and get the same nice page with sensors data and some logic inside. But with a waaaay less memory footprint and with possibility to open this page from #Dillo 
Frank B
Max Maass 
Cegorach
Hobbyblogging.de
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Florian 
Thoralf Will 🇺🇦🇮🇱🇹🇼
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