I think technologies wise TikTok is similar to that of Youtube Shorts Both seems to preload about 10 secs of next 4-5 videos. I think here is the trick: if yo

I think technologies wise TikTok is similar to that of Youtube Shorts Both seems to preload about 10 secs of next 4-5 videos. I think here is the trick: if your recommendation gets sufficiently good, then user won't eagerly scrolling next just to get content they would actually watch, which makes serving less of noticeable problem. There is a feedback loop here. On TikTok I rarely gets content that would skip at first sight, which speaks to strength of its algorithm. Don't know about Reddit/Twitter, but Netflix's video is a whole different business overall, all the DRAM and stuff.