My biggest beef with VictoriaMetrics is I can't delete and re-ingest a range of data. i.e. if I discover yesterdays data was messed up due to some issue in downstream data processing, I can't delete yesterdays data and re-ingest the cleaned up data. (Or even just delete yesterdays bad data)

The only workaround I've found so far is to dump out the whole timeseries which could go back months/years, delete the timeseries, fix/delete data in the dump and re-ingest the whole thing. This really, really sucks.