[freespirit77]

Could be due to home feeds not having enough cached content as a lot of the first page posts went private and had to be skipped? Would have led to have to go deeper in lists of posts to fill the first page and causing more cache misses and db reads and performance issues.

[klodolph]

The way Reddit displays content is basically all caches, as far as I can tell. Every query you do is supposed to directly hit a cache of 1000 objects (like comments or posts). You can’t go past 1000, either through the web interface or through the API.

Kinda frustrating design, IMO, speaking as an end-user.

[kenhwang]

It was always obvious when you scrolled past the cached content because errors or timeouts would start happening pretty frequently.

[derefr]

Very likely; before the crash, I noticed that the home page failed to load, but individual subreddits continued to load.