Disable Persistance (rrdj) for some Items?

Add-ons Persistence Services
1

Hello.
How is it possible to switch off the standard persistance for individual items?
I don’t need a history of a switch or a battery charge. I want to disable these write accesses.
i find no entry in the UI.
Thx in advance.
cidi

2

You can use groups to simplify, have a look here.

3

To disable persistence for everything just remove the persistence service via the UI.

However, if you want to persist only some Items you will have to create/modify the relevant persistence file configuration in the persistence folder. Check the documentation on persistence on how to go about this.

Here is my rrd4j.persist file:

Strategies {
    // for rrd charts, we need a cron strategy
    everyMinute : "0 * * * * ?"
    default = everyChange
}

Items {
    // persist items on every change and every minute
    //* : strategy = everyChange, everyMinute
    sLoftTemperature, nProxmoxTemp, nZ83Temp, nPi3BTemp, nPi0Temp, nSetpointTarget, nCurrentSetpoint, nCurrentTemperature: strategy = everyChange
    nPhaseOfDay : strategy = everyChange, restoreOnStartup
    gEnergy*, gSecurityLights* : strategy = everyUpdate
}

(There are definitely some redundant lines in there, but meh!)