BTW updating the values in grafana is basically configuration of the heatmap graph, so it is fairly easy to do, just not.automatic

Wow I didn't send my answer sorry about it.
Yeah you're right keeping old data is always a good way.
I'm new to Grafana so I get questions about it. Anyway thank you for your answer 👍

hi @<1546303293918023680:profile|MiniatureRobin9>

I can still see the metrics in Grafana. I

it will not delete it from grafana, it means it's no longer collected, make sense ?

Hi @<1523701205467926528:profile|AgitatedDove14> , I understand what you mean.
In the case when I want to change my bucket values, it will not update them on Grafana and I will have to add a new endpoint. Is there a way to update the bucket values in Grafana, or deleting the variable/metric in Grafana ?

Hmm so yes that is true, if you are changing the bucket values you will have to manually also adjust it in grafana. I wonder if there is a shortcut here, the data is stored in Prometheus, and I would rather try to avoid deleting old data, Wdyt?