this post was submitted on 11 Jul 2023
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Lemmy
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The largest table holds data that is only needed by Lemmy briefly. There is a scheduled job to clear it... Every 6 months. There are active discussions on how best to handle this.
On my instance I've set a cronjob to delete everything but the most recent 100k rows of that table every hour.
I saw that issue, and then I saw people having problems after clearing it, so I'm just going to wait until they figure that out in a stable version. Looking forward to it though!
@[email protected] @[email protected] Can either of you link to that discussion please?
It looks like the issue I was referring to has since been edited, as it's not actually relevant to clearing this database bloat:
https://github.com/LemmyNet/lemmy/issues/3103
I mean, that post is exactly about clearing database bloat. The bulk of the bloat is in the activity table (going by the comments in the thread).
Yeah, I meant the comments that have been hidden previously made it seem like clearing it would be an issue, so I hesitated to clear it. Now that those comments have been edited, it looks like it won't break anything after all.
Gotcha. Thanks for pointing me in that direction. Seems like that table's only useful for debugging federation issues. Not sure why they'd want to keep it for 6 months.
It seems like lots of design choices were made with pre-Reddit-exodus usage in mind 😅
That's for sure. Hopefully they can pivot and start thinking about how to scale better. On one hand I don't envy the developers but it's gotta be kind exciting.