Thread:Project:Support desk/Store Calculated Variable History

I get external data, run some queries and calculations and produce a metric. When the data changes, so does the metric. I'd like to store that calculation so I can have a history that is not dependent on the data. Ideally, the metric would be stored with the next or Friday as the date. Wednesday would overwrite Tuesdays' data, but come Saturday would make a have a new entry to the next Friday. I can then see how the metric changes by week and how it's tracking for the current week.

on 12/18 Metric is 10 -> store as 12/20, 10 on 12/19 Metric is 11 -> store as 12/20, 11 on 12/20 Metric is 9 -> store as 12/20, 9 on 12/21 Metric is 9 -> store as 12/27, 12

The data source prevents me from running a calculation to get past data so I need to store these as a sort of snapshot. Can I do this without running a SQL server to write data to? I'd like to write it to a page or a storage place within my mediawiki.