We have been using prometheus at a client for little over a year now. Since we need to keep metrics for years, prometheus cannot seem to be able to deal with it

We have been using prometheus at a client for little over a year now. Since we need to keep metrics for years, prometheus cannot seem to be able to deal with it well. One behavior we observed is it crashes consistently in k8s. We couldn’t pin down the root cause but suspect it’s the amount of metrics we collect continuously and keep (archive). Now we are considering to switch to thanos or mimir.