Thanks for the interesting article!

You can offload all the headache related to managing Prometheus local storage to long-term remote storage such as VictoriaMetrics. Just add a few lines into Prometheus config and stop worrying about local storage persistence, since Prometheus immediately replicates all the scraped data to the configured remote storage.

As for Thanos vs VictoriaMetrics comparison I’d recommend reading https://medium.com/faun/comparing-thanos-to-victoriametrics-cluster-b193bea1683 .