Hello,
i can’t find any informations how long data of persistent items will stored in database.
i’m looking a for a solution to store all data only for one month.
Regards, Web
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OH doesn’t control that. Your choices are:
- MapDB which only stores the most recent value
- rrd4j which only stores numbers but as data gets older it replaces a group of values with their average and it keeps the size of the database in terms of disk space used constant
- Use any other database and configure that database to clear out the old data or run scripts to clear out the older data
I do know that InfluxDB has the concept of retention policies that can be configured appropriately to delete data older than a month, but all of this will be outside the scope of OH. There is some discussion of that on the famous Influx+Grafana tutorial post.
Okay thanks.
i try to solve it with a sql script.
Regards, Web