Correct just reading from the database won't hurt anything. The code will trigger a Data base read and in this case a sum of the data for yesterday. >From a CPU perspective it seems to have little effect on the Rpi 3 I use, I actually pull rain for the last 24 hours, last week, and last month.
As for the SD Card life I can't say much since I use an old spinning USB Hard drive to store my data, but data reads are not very hard on an SD it is the writes I believe are the issue. If you search through the posts I think you'll find info on SD card life, plus ways to minimize the writes. It may be possible to run a query on the DB at say 5 past midnight and save the data to a text file or a DB record and then not have to run the query every report cycle, but it beyond what I have done.... -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/447278e2-0a1f-4f29-951f-bca43fd04107o%40googlegroups.com.
