this post was submitted on 14 May 2024
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Hey, sorry for the late reply, but I'm trying to figure out who runs this graph, because if it needs something like a bit of funding to store data for longer periods I'd like to help. Do you know, or know where you heard about it?
Hi, I run this.
What benefit do you expect from longer retention periods and how much time did you have in mind?
The way data is currently collected and stored keeps the same granularity for the entire time period, which currently uses around 60 GiB for a month of retention across all monitored instances.
Mainly, I'm interested in how Lemmy is growing and changing as a whole. If there was a way to store activity just weekly or even monthly that would help.
so all you're looking for is the amount of activities generated per instance?
that is only a small subset of the data currently collected, most of the storage use currently comes from collecting information in relation to other instances.
Yep. As far as I know nobody else collects that information, though.
I'll probably have to look at another storage than prometheus, aiui it's not really well suited for this task.
maybe something with influxdb+telegraf, although i haven't looked at that yet.
Thanks for the attention to this! If I can help in any way just say so.
do you happen to have experience with setting up influxdb and telegraf? or maybe something else that might be better suited?
the metrics are currently in prometheus metrics format and scraped every 5 minutes.
my idea was to keep the current retention for most metrics and have longer retention (possibly with lower granularity for data older than a month).
the current prometheus setup is super simple, you can see (and older copy of) the config here.
if you want to build a configuration for influxdb/telegraf that i can more or less just drop in there without too many adjustments that would certainly be welcomed.
the metric that would need longer retention is
lemmy_federation_state_last_successful_id_local.I don't have experience, but I can make a project out of it nonetheless!