keep old data with hourly granular

[daixiang0]

In a Production Environment, i set the time to delete data is 15d and collect data every 15s.

Now i want to view data trend graph in whole year(i think it is useful), but the data size of whole year is too large, so i want delete old data over one month, but not remove them all, just keep them with hour level, so that data size could be small.

Is it possible?

[brian-brazil]

It makes more sense to ask questions like this on the prometheus-users mailing list rather than in a GitHub issue. On the mailing list, more people are available to potentially respond to your question, and the whole community can benefit from the answers provided.