I have a quickly changing variable in mqtt broker. (Few times/sec ?). Id like to see it in HA as graph however I don’t want to use too much memory of my rpi. Is it possible to limit the history of this particular sensor/variable to lets say 2 hours? Thx
#Mqtt sensor/variable with limited memory/history?
scenic knot
trim drum
Add it as a recorder filter https://www.home-assistant.io/integrations/recorder/#configure-filter - that should result in you only having LTS for the sensor, which is 3 numbers every 5 minutes
that said, the standard 5 days at 10 updates/s is only 4.3 million entries - sub 50MB
hoary meteor
If you exclude an entity from the recorder you will not get LTS for it.
trim drum
ah dang, thought you still generated LTS... what about if you set up an automation purge it every night?
scenic knot
Ok. So RECORDER is the key and PURGE to keep it clean