On Reddit, there is a limit of 1,000 posts that can be saved and viewed. After exceeding 1,000, the oldest saved posts will no longer be visible and make place for the new saved posts.
I’m not aware of there being any limits for that, and I think it’d be in the admin panel if it were.
On Reddit I think it’s mostly a limitation to try to keep database queries from going too slow as browsing ordered list like these on most databases amounts to running the query and discarding the first X results and returning the next Y results. So the farther you go back, the more expensive the query, especially on really big databases.
On Lemmy, if you run your own instance, I doubt anyone would care if you make a 20 seconds query to go browse really far back. All the data is local. So that’d be an admin setting of some sort.
