Initially I want to thank for the update of this (and all other) persistence services in order to be useable on OH3!
I could not find an update of the documentation reflecting the changes, did I miss it or should I start working on it? In order to do the later I need the following clarifications.
I noticed that rrd4j does persis a value now INTERNALLY every ten seconds, IMHO this would make the requirement for the everyMinute strategy obsolete (tested with every2Minues, however only in archive 1 of a default database [which?]). IMHO this internal behaviour creates a better charting resolution, the used persistence strategy is working as expected (i.e. with an everyMinute strategy a NEW value is persisted only once every minute, the intermediate internall savings are using unchanged values).
There are three different default database setups created (numeric, quantifiable and other), how are they selectable? How to determine which is actually used? @Kai
It seems thatI was a bit early with my questions, after reading the announcement about the OH3.0 milestone I found the OH3 Documentation, especially the pages for the addons. Trying to edit on Gethub from the [new rrd4j readme site] (https://next.openhab.org/addons/persistence/rrd4j/) results in a 404, which is the correct tree (I’d say main)?
Will start working on it, a hint on my other questions is appreciated.
After more testing, it looks to me as if using a custom database setup rrd4j is storing INTERNALLY a copy of the actual persisted state every 5 seconds (looks like the Default_Other database to me) .
Managed to get rrd4j running in IDE Eclipse, however in there the DemoItems do get persisted in rrd4j using NOT the default_other datasource (either Default_numeric or default_quantifiable). A service folder was not existing, a manually created folder with a rrd4j.cfg was not read. No clou were to find a log about what is going on.
