I use Lemmy Community Seeder. Every four hours it checks the top posts on instances you specifies and automatically subscribes you to communities that appear there but you aren't already subscribed to. You can tweak it to ignore specific communities or instances.
this post was submitted on 16 Aug 2023
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That's amazing! I'm gonna set it up on my instance
Keep in mind that you're going to be retrieving and storing a huge amount of data running these scripts, and you should expect to need more than a $5 1gb of RAM vps to do it without it being a shitty broken experience for you.
We're talking dozens of gigabytes of storage for the database, plus effectively a need for an infinite amount of storage for the image caching, plus enough RAM and CPU resources to effectively process the whole Threadiverse.
True dat. I've been running it about seven weeks and am pulling about 700 communities. Most have near zero traffic but the high volume ones do add up.
42G /mnt/sp4dot1-data/appdata/mylemmy.win/
12G /mnt/sp4dot1-data/appdata/mylemmy.win/postgres
30G /mnt/sp4dot1-data/appdata/mylemmy.win/pictrs
I subscribe to !newcommunities@lemmy.world which helps. Other than that I look for mentions of other communities in comments, similar to how I used to on reddit.
This is really great, it's basically the same effect as what OP is doing when browsing c/All on a large instance, except you can do it on a small instance and without using an insane amount of system resources on your server